Home / 30,372.68-45,557.40-8,185.70

Finding the Fourth Proportional to 30,372.68, 45,557.40 and 8,185.70

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Solution

The fourth proportional to 30,372.68, 45,557.40 and 8,185.70 is: 12,278.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372.68 : 45,557.40 = 8,185.70 : x
  2. Step 2: Convert to fraction form
    30,372.68/45,557.40 = 8,185.70/x
  3. Step 3: Cross multiply
    30,372.68x = 45,557.40 × 8,185.70
  4. Step 4: Simplify right side
    30,372.68x = 372,919,209.18
  5. Step 5: Solve for x
    x = 372,919,209.18/30,372.68
  6. Step 6: Final answer
    x = 12,278.11

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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.