Home / 16,810.10-25,215.15-15,139.70

Finding the Fourth Proportional to 16,810.10, 25,215.15 and 15,139.70

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Solution

The fourth proportional to 16,810.10, 25,215.15 and 15,139.70 is: 22,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,810.10 : 25,215.15 = 15,139.70 : x
  2. Step 2: Convert to fraction form
    16,810.10/25,215.15 = 15,139.70/x
  3. Step 3: Cross multiply
    16,810.10x = 25,215.15 × 15,139.70
  4. Step 4: Simplify right side
    16,810.10x = 381,749,806.46
  5. Step 5: Solve for x
    x = 381,749,806.46/16,810.10
  6. Step 6: Final answer
    x = 22,709.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.