Home / 28,587.11-42,895.29-13,611.17

Finding the Fourth Proportional to 28,587.11, 42,895.29 and 13,611.17

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Solution

The fourth proportional to 28,587.11, 42,895.29 and 13,611.17 is: 20,423.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.11 : 42,895.29 = 13,611.17 : x
  2. Step 2: Convert to fraction form
    28,587.11/42,895.29 = 13,611.17/x
  3. Step 3: Cross multiply
    28,587.11x = 42,895.29 × 13,611.17
  4. Step 4: Simplify right side
    28,587.11x = 583,854,869.91
  5. Step 5: Solve for x
    x = 583,854,869.91/28,587.11
  6. Step 6: Final answer
    x = 20,423.71

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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.