Home / 12,503.40-18,755.08-5,106.55

Finding the Fourth Proportional to 12,503.40, 18,755.08 and 5,106.55

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Solution

The fourth proportional to 12,503.40, 18,755.08 and 5,106.55 is: 7,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.40 : 18,755.08 = 5,106.55 : x
  2. Step 2: Convert to fraction form
    12,503.40/18,755.08 = 5,106.55/x
  3. Step 3: Cross multiply
    12,503.40x = 18,755.08 × 5,106.55
  4. Step 4: Simplify right side
    12,503.40x = 95,773,753.77
  5. Step 5: Solve for x
    x = 95,773,753.77/12,503.40
  6. Step 6: Final answer
    x = 7,659.82

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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.