Home / 13,931.92-19,226.10-7,644.28

Finding the Fourth Proportional to 13,931.92, 19,226.10 and 7,644.28

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Solution

The fourth proportional to 13,931.92, 19,226.10 and 7,644.28 is: 10,549.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.92 : 19,226.10 = 7,644.28 : x
  2. Step 2: Convert to fraction form
    13,931.92/19,226.10 = 7,644.28/x
  3. Step 3: Cross multiply
    13,931.92x = 19,226.10 × 7,644.28
  4. Step 4: Simplify right side
    13,931.92x = 146,969,691.71
  5. Step 5: Solve for x
    x = 146,969,691.71/13,931.92
  6. Step 6: Final answer
    x = 10,549.13

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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.