Home / 25,789.80-38,688.70-10,998.76

Finding the Fourth Proportional to 25,789.80, 38,688.70 and 10,998.76

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Solution

The fourth proportional to 25,789.80, 38,688.70 and 10,998.76 is: 16,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,789.80 : 38,688.70 = 10,998.76 : x
  2. Step 2: Convert to fraction form
    25,789.80/38,688.70 = 10,998.76/x
  3. Step 3: Cross multiply
    25,789.80x = 38,688.70 × 10,998.76
  4. Step 4: Simplify right side
    25,789.80x = 425,527,726.01
  5. Step 5: Solve for x
    x = 425,527,726.01/25,789.80
  6. Step 6: Final answer
    x = 16,499.85

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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.