Home / 28,316.52-39,078.18-15,741

Finding the Fourth Proportional to 28,316.52, 39,078.18 and 15,741

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Solution

The fourth proportional to 28,316.52, 39,078.18 and 15,741 is: 21,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.52 : 39,078.18 = 15,741 : x
  2. Step 2: Convert to fraction form
    28,316.52/39,078.18 = 15,741/x
  3. Step 3: Cross multiply
    28,316.52x = 39,078.18 × 15,741
  4. Step 4: Simplify right side
    28,316.52x = 615,129,631.38
  5. Step 5: Solve for x
    x = 615,129,631.38/28,316.52
  6. Step 6: Final answer
    x = 21,723.35

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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.