Home / 21,695.38-29,931.06-13,624.28

Finding the Fourth Proportional to 21,695.38, 29,931.06 and 13,624.28

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Solution

The fourth proportional to 21,695.38, 29,931.06 and 13,624.28 is: 18,796.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.38 : 29,931.06 = 13,624.28 : x
  2. Step 2: Convert to fraction form
    21,695.38/29,931.06 = 13,624.28/x
  3. Step 3: Cross multiply
    21,695.38x = 29,931.06 × 13,624.28
  4. Step 4: Simplify right side
    21,695.38x = 407,789,179.55
  5. Step 5: Solve for x
    x = 407,789,179.55/21,695.38
  6. Step 6: Final answer
    x = 18,796.13

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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.