Home / 27,715.01-38,245.91-15,139.76

Finding the Fourth Proportional to 27,715.01, 38,245.91 and 15,139.76

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Solution

The fourth proportional to 27,715.01, 38,245.91 and 15,139.76 is: 20,892.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,715.01 : 38,245.91 = 15,139.76 : x
  2. Step 2: Convert to fraction form
    27,715.01/38,245.91 = 15,139.76/x
  3. Step 3: Cross multiply
    27,715.01x = 38,245.91 × 15,139.76
  4. Step 4: Simplify right side
    27,715.01x = 579,033,631.45
  5. Step 5: Solve for x
    x = 579,033,631.45/27,715.01
  6. Step 6: Final answer
    x = 20,892.42

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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.