Home / 28,404.62-39,269.23-21,318.74

Finding the Fourth Proportional to 28,404.62, 39,269.23 and 21,318.74

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Solution

The fourth proportional to 28,404.62, 39,269.23 and 21,318.74 is: 29,473.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.62 : 39,269.23 = 21,318.74 : x
  2. Step 2: Convert to fraction form
    28,404.62/39,269.23 = 21,318.74/x
  3. Step 3: Cross multiply
    28,404.62x = 39,269.23 × 21,318.74
  4. Step 4: Simplify right side
    28,404.62x = 837,170,254.73
  5. Step 5: Solve for x
    x = 837,170,254.73/28,404.62
  6. Step 6: Final answer
    x = 29,473.04

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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.