Home / 20,569.96-28,387.62-13,500.52

Finding the Fourth Proportional to 20,569.96, 28,387.62 and 13,500.52

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Solution

The fourth proportional to 20,569.96, 28,387.62 and 13,500.52 is: 18,631.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.96 : 28,387.62 = 13,500.52 : x
  2. Step 2: Convert to fraction form
    20,569.96/28,387.62 = 13,500.52/x
  3. Step 3: Cross multiply
    20,569.96x = 28,387.62 × 13,500.52
  4. Step 4: Simplify right side
    20,569.96x = 383,247,631.56
  5. Step 5: Solve for x
    x = 383,247,631.56/20,569.96
  6. Step 6: Final answer
    x = 18,631.42

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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.