Home / 28,031.78-42,046.75-11,386.88

Finding the Fourth Proportional to 28,031.78, 42,046.75 and 11,386.88

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Solution

The fourth proportional to 28,031.78, 42,046.75 and 11,386.88 is: 17,079.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.78 : 42,046.75 = 11,386.88 : x
  2. Step 2: Convert to fraction form
    28,031.78/42,046.75 = 11,386.88/x
  3. Step 3: Cross multiply
    28,031.78x = 42,046.75 × 11,386.88
  4. Step 4: Simplify right side
    28,031.78x = 478,781,373.29
  5. Step 5: Solve for x
    x = 478,781,373.29/28,031.78
  6. Step 6: Final answer
    x = 17,079.95

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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.