Home / 15,549.35-21,458.16-8,475.75

Finding the Fourth Proportional to 15,549.35, 21,458.16 and 8,475.75

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Solution

The fourth proportional to 15,549.35, 21,458.16 and 8,475.75 is: 11,696.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.35 : 21,458.16 = 8,475.75 : x
  2. Step 2: Convert to fraction form
    15,549.35/21,458.16 = 8,475.75/x
  3. Step 3: Cross multiply
    15,549.35x = 21,458.16 × 8,475.75
  4. Step 4: Simplify right side
    15,549.35x = 181,873,999.62
  5. Step 5: Solve for x
    x = 181,873,999.62/15,549.35
  6. Step 6: Final answer
    x = 11,696.57

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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.