Home / 20,530.72-28,332.24-16,059.04

Finding the Fourth Proportional to 20,530.72, 28,332.24 and 16,059.04

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Solution

The fourth proportional to 20,530.72, 28,332.24 and 16,059.04 is: 22,161.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.72 : 28,332.24 = 16,059.04 : x
  2. Step 2: Convert to fraction form
    20,530.72/28,332.24 = 16,059.04/x
  3. Step 3: Cross multiply
    20,530.72x = 28,332.24 × 16,059.04
  4. Step 4: Simplify right side
    20,530.72x = 454,988,575.45
  5. Step 5: Solve for x
    x = 454,988,575.45/20,530.72
  6. Step 6: Final answer
    x = 22,161.36

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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.