Home / 30,330.18-45,490.14-8,141.72

Finding the Fourth Proportional to 30,330.18, 45,490.14 and 8,141.72

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Solution

The fourth proportional to 30,330.18, 45,490.14 and 8,141.72 is: 12,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,330.18 : 45,490.14 = 8,141.72 : x
  2. Step 2: Convert to fraction form
    30,330.18/45,490.14 = 8,141.72/x
  3. Step 3: Cross multiply
    30,330.18x = 45,490.14 × 8,141.72
  4. Step 4: Simplify right side
    30,330.18x = 370,367,755.19
  5. Step 5: Solve for x
    x = 370,367,755.19/30,330.18
  6. Step 6: Final answer
    x = 12,211.20

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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.