Home / 30,197.90-45,278.96-9,131.55

Finding the Fourth Proportional to 30,197.90, 45,278.96 and 9,131.55

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Solution

The fourth proportional to 30,197.90, 45,278.96 and 9,131.55 is: 13,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,197.90 : 45,278.96 = 9,131.55 : x
  2. Step 2: Convert to fraction form
    30,197.90/45,278.96 = 9,131.55/x
  3. Step 3: Cross multiply
    30,197.90x = 45,278.96 × 9,131.55
  4. Step 4: Simplify right side
    30,197.90x = 413,467,041.53
  5. Step 5: Solve for x
    x = 413,467,041.53/30,197.90
  6. Step 6: Final answer
    x = 13,691.92

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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.