Home / 20,634.36-28,411.65-16,115.29

Finding the Fourth Proportional to 20,634.36, 28,411.65 and 16,115.29

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Solution

The fourth proportional to 20,634.36, 28,411.65 and 16,115.29 is: 22,189.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.36 : 28,411.65 = 16,115.29 : x
  2. Step 2: Convert to fraction form
    20,634.36/28,411.65 = 16,115.29/x
  3. Step 3: Cross multiply
    20,634.36x = 28,411.65 × 16,115.29
  4. Step 4: Simplify right side
    20,634.36x = 457,862,143.46
  5. Step 5: Solve for x
    x = 457,862,143.46/20,634.36
  6. Step 6: Final answer
    x = 22,189.31

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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.