Home / 20,859.17-28,813.25-15,544.76

Finding the Fourth Proportional to 20,859.17, 28,813.25 and 15,544.76

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Solution

The fourth proportional to 20,859.17, 28,813.25 and 15,544.76 is: 21,472.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.17 : 28,813.25 = 15,544.76 : x
  2. Step 2: Convert to fraction form
    20,859.17/28,813.25 = 15,544.76/x
  3. Step 3: Cross multiply
    20,859.17x = 28,813.25 × 15,544.76
  4. Step 4: Simplify right side
    20,859.17x = 447,894,950.87
  5. Step 5: Solve for x
    x = 447,894,950.87/20,859.17
  6. Step 6: Final answer
    x = 21,472.33

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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.