Home / 20,503.30-28,294.98-12,436.90

Finding the Fourth Proportional to 20,503.30, 28,294.98 and 12,436.90

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Solution

The fourth proportional to 20,503.30, 28,294.98 and 12,436.90 is: 17,163.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.30 : 28,294.98 = 12,436.90 : x
  2. Step 2: Convert to fraction form
    20,503.30/28,294.98 = 12,436.90/x
  3. Step 3: Cross multiply
    20,503.30x = 28,294.98 × 12,436.90
  4. Step 4: Simplify right side
    20,503.30x = 351,901,836.76
  5. Step 5: Solve for x
    x = 351,901,836.76/20,503.30
  6. Step 6: Final answer
    x = 17,163.18

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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.