Home / 28,316.75-39,077.12-15,743.93

Finding the Fourth Proportional to 28,316.75, 39,077.12 and 15,743.93

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Solution

The fourth proportional to 28,316.75, 39,077.12 and 15,743.93 is: 21,726.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.75 : 39,077.12 = 15,743.93 : x
  2. Step 2: Convert to fraction form
    28,316.75/39,077.12 = 15,743.93/x
  3. Step 3: Cross multiply
    28,316.75x = 39,077.12 × 15,743.93
  4. Step 4: Simplify right side
    28,316.75x = 615,227,363.16
  5. Step 5: Solve for x
    x = 615,227,363.16/28,316.75
  6. Step 6: Final answer
    x = 21,726.62

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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.