Home / 27,862.70-38,450.30-15,115.86

Finding the Fourth Proportional to 27,862.70, 38,450.30 and 15,115.86

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Solution

The fourth proportional to 27,862.70, 38,450.30 and 15,115.86 is: 20,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,862.70 : 38,450.30 = 15,115.86 : x
  2. Step 2: Convert to fraction form
    27,862.70/38,450.30 = 15,115.86/x
  3. Step 3: Cross multiply
    27,862.70x = 38,450.30 × 15,115.86
  4. Step 4: Simplify right side
    27,862.70x = 581,209,276.18
  5. Step 5: Solve for x
    x = 581,209,276.18/27,862.70
  6. Step 6: Final answer
    x = 20,859.77

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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.