Home / 30,132.72-45,186.12-12,351.02

Finding the Fourth Proportional to 30,132.72, 45,186.12 and 12,351.02

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Solution

The fourth proportional to 30,132.72, 45,186.12 and 12,351.02 is: 18,521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,132.72 : 45,186.12 = 12,351.02 : x
  2. Step 2: Convert to fraction form
    30,132.72/45,186.12 = 12,351.02/x
  3. Step 3: Cross multiply
    30,132.72x = 45,186.12 × 12,351.02
  4. Step 4: Simplify right side
    30,132.72x = 558,094,445.91
  5. Step 5: Solve for x
    x = 558,094,445.91/30,132.72
  6. Step 6: Final answer
    x = 18,521.21

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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.