Home / 27,878.10-38,470.05-15,302.76

Finding the Fourth Proportional to 27,878.10, 38,470.05 and 15,302.76

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Solution

The fourth proportional to 27,878.10, 38,470.05 and 15,302.76 is: 21,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.10 : 38,470.05 = 15,302.76 : x
  2. Step 2: Convert to fraction form
    27,878.10/38,470.05 = 15,302.76/x
  3. Step 3: Cross multiply
    27,878.10x = 38,470.05 × 15,302.76
  4. Step 4: Simplify right side
    27,878.10x = 588,697,942.34
  5. Step 5: Solve for x
    x = 588,697,942.34/27,878.10
  6. Step 6: Final answer
    x = 21,116.86

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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.