Home / 27,638.13-38,140.89-15,063.15

Finding the Fourth Proportional to 27,638.13, 38,140.89 and 15,063.15

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Solution

The fourth proportional to 27,638.13, 38,140.89 and 15,063.15 is: 20,787.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.13 : 38,140.89 = 15,063.15 : x
  2. Step 2: Convert to fraction form
    27,638.13/38,140.89 = 15,063.15/x
  3. Step 3: Cross multiply
    27,638.13x = 38,140.89 × 15,063.15
  4. Step 4: Simplify right side
    27,638.13x = 574,521,947.20
  5. Step 5: Solve for x
    x = 574,521,947.20/27,638.13
  6. Step 6: Final answer
    x = 20,787.29

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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.