Home / 28,314.38-39,073.87-15,567.78

Finding the Fourth Proportional to 28,314.38, 39,073.87 and 15,567.78

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Solution

The fourth proportional to 28,314.38, 39,073.87 and 15,567.78 is: 21,483.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,314.38 : 39,073.87 = 15,567.78 : x
  2. Step 2: Convert to fraction form
    28,314.38/39,073.87 = 15,567.78/x
  3. Step 3: Cross multiply
    28,314.38x = 39,073.87 × 15,567.78
  4. Step 4: Simplify right side
    28,314.38x = 608,293,138.70
  5. Step 5: Solve for x
    x = 608,293,138.70/28,314.38
  6. Step 6: Final answer
    x = 21,483.54

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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.