Home / 15,311.24-21,124.48-9,340.76

Finding the Fourth Proportional to 15,311.24, 21,124.48 and 9,340.76

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Solution

The fourth proportional to 15,311.24, 21,124.48 and 9,340.76 is: 12,887.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.24 : 21,124.48 = 9,340.76 : x
  2. Step 2: Convert to fraction form
    15,311.24/21,124.48 = 9,340.76/x
  3. Step 3: Cross multiply
    15,311.24x = 21,124.48 × 9,340.76
  4. Step 4: Simplify right side
    15,311.24x = 197,318,697.80
  5. Step 5: Solve for x
    x = 197,318,697.80/15,311.24
  6. Step 6: Final answer
    x = 12,887.18

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Half scale
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Double scale
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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.