Home / 30,197.40-45,278.20-9,131.05

Finding the Fourth Proportional to 30,197.40, 45,278.20 and 9,131.05

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Solution

The fourth proportional to 30,197.40, 45,278.20 and 9,131.05 is: 13,691.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,197.40 : 45,278.20 = 9,131.05 : x
  2. Step 2: Convert to fraction form
    30,197.40/45,278.20 = 9,131.05/x
  3. Step 3: Cross multiply
    30,197.40x = 45,278.20 × 9,131.05
  4. Step 4: Simplify right side
    30,197.40x = 413,437,508.11
  5. Step 5: Solve for x
    x = 413,437,508.11/30,197.40
  6. Step 6: Final answer
    x = 13,691.16

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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.