Home / 28,275.97-42,428.54-11,648.29

Finding the Fourth Proportional to 28,275.97, 42,428.54 and 11,648.29

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Solution

The fourth proportional to 28,275.97, 42,428.54 and 11,648.29 is: 17,478.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.97 : 42,428.54 = 11,648.29 : x
  2. Step 2: Convert to fraction form
    28,275.97/42,428.54 = 11,648.29/x
  3. Step 3: Cross multiply
    28,275.97x = 42,428.54 × 11,648.29
  4. Step 4: Simplify right side
    28,275.97x = 494,219,938.20
  5. Step 5: Solve for x
    x = 494,219,938.20/28,275.97
  6. Step 6: Final answer
    x = 17,478.44

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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.