Home / 27,715.15-38,246.66-15,139.63

Finding the Fourth Proportional to 27,715.15, 38,246.66 and 15,139.63

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Solution

The fourth proportional to 27,715.15, 38,246.66 and 15,139.63 is: 20,892.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,715.15 : 38,246.66 = 15,139.63 : x
  2. Step 2: Convert to fraction form
    27,715.15/38,246.66 = 15,139.63/x
  3. Step 3: Cross multiply
    27,715.15x = 38,246.66 × 15,139.63
  4. Step 4: Simplify right side
    27,715.15x = 579,040,281.14
  5. Step 5: Solve for x
    x = 579,040,281.14/27,715.15
  6. Step 6: Final answer
    x = 20,892.55

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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.