Home / 20,645.45-28,502.54-13,592.38

Finding the Fourth Proportional to 20,645.45, 28,502.54 and 13,592.38

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Solution

The fourth proportional to 20,645.45, 28,502.54 and 13,592.38 is: 18,765.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.45 : 28,502.54 = 13,592.38 : x
  2. Step 2: Convert to fraction form
    20,645.45/28,502.54 = 13,592.38/x
  3. Step 3: Cross multiply
    20,645.45x = 28,502.54 × 13,592.38
  4. Step 4: Simplify right side
    20,645.45x = 387,417,246.11
  5. Step 5: Solve for x
    x = 387,417,246.11/20,645.45
  6. Step 6: Final answer
    x = 18,765.26

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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.