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Finding the Fourth Proportional to 12,041.20, 18,060.90 and 5,019.40

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Solution

The fourth proportional to 12,041.20, 18,060.90 and 5,019.40 is: 7,528.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,041.20 : 18,060.90 = 5,019.40 : x
  2. Step 2: Convert to fraction form
    12,041.20/18,060.90 = 5,019.40/x
  3. Step 3: Cross multiply
    12,041.20x = 18,060.90 × 5,019.40
  4. Step 4: Simplify right side
    12,041.20x = 90,654,881.46
  5. Step 5: Solve for x
    x = 90,654,881.46/12,041.20
  6. Step 6: Final answer
    x = 7,528.72

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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.