Home / 21,458.32-29,614.10-13,507.36

Finding the Fourth Proportional to 21,458.32, 29,614.10 and 13,507.36

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Solution

The fourth proportional to 21,458.32, 29,614.10 and 13,507.36 is: 18,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458.32 : 29,614.10 = 13,507.36 : x
  2. Step 2: Convert to fraction form
    21,458.32/29,614.10 = 13,507.36/x
  3. Step 3: Cross multiply
    21,458.32x = 29,614.10 × 13,507.36
  4. Step 4: Simplify right side
    21,458.32x = 400,008,309.78
  5. Step 5: Solve for x
    x = 400,008,309.78/21,458.32
  6. Step 6: Final answer
    x = 18,641.18

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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.