Home / 27,689.04-38,211.42-15,113.76

Finding the Fourth Proportional to 27,689.04, 38,211.42 and 15,113.76

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Solution

The fourth proportional to 27,689.04, 38,211.42 and 15,113.76 is: 20,857.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.04 : 38,211.42 = 15,113.76 : x
  2. Step 2: Convert to fraction form
    27,689.04/38,211.42 = 15,113.76/x
  3. Step 3: Cross multiply
    27,689.04x = 38,211.42 × 15,113.76
  4. Step 4: Simplify right side
    27,689.04x = 577,518,231.14
  5. Step 5: Solve for x
    x = 577,518,231.14/27,689.04
  6. Step 6: Final answer
    x = 20,857.29

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Half scale
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Double scale
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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.