Home / 20,337.67-30,565.55-13,455.91

Finding the Fourth Proportional to 20,337.67, 30,565.55 and 13,455.91

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Solution

The fourth proportional to 20,337.67, 30,565.55 and 13,455.91 is: 20,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.67 : 30,565.55 = 13,455.91 : x
  2. Step 2: Convert to fraction form
    20,337.67/30,565.55 = 13,455.91/x
  3. Step 3: Cross multiply
    20,337.67x = 30,565.55 × 13,455.91
  4. Step 4: Simplify right side
    20,337.67x = 411,287,289.90
  5. Step 5: Solve for x
    x = 411,287,289.90/20,337.67
  6. Step 6: Final answer
    x = 20,222.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.