Home / 15,311.46-21,130.56-8,598.18

Finding the Fourth Proportional to 15,311.46, 21,130.56 and 8,598.18

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Solution

The fourth proportional to 15,311.46, 21,130.56 and 8,598.18 is: 11,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.46 : 21,130.56 = 8,598.18 : x
  2. Step 2: Convert to fraction form
    15,311.46/21,130.56 = 8,598.18/x
  3. Step 3: Cross multiply
    15,311.46x = 21,130.56 × 8,598.18
  4. Step 4: Simplify right side
    15,311.46x = 181,684,358.38
  5. Step 5: Solve for x
    x = 181,684,358.38/15,311.46
  6. Step 6: Final answer
    x = 11,865.91

Related Problems

Find fourth proportional to 7,655.73, 10,565.28 and 4,299.09
Half scale
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Double scale
Find fourth proportional to 15,312.46, 21,131.94 and 8,599.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.