Home / 12,127,528.20-18,191,292.30-7,822,856.10

Finding the Fourth Proportional to 12,127,528.20, 18,191,292.30 and 7,822,856.10

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Solution

The fourth proportional to 12,127,528.20, 18,191,292.30 and 7,822,856.10 is: 11,734,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,528.20 : 18,191,292.30 = 7,822,856.10 : x
  2. Step 2: Convert to fraction form
    12,127,528.20/18,191,292.30 = 7,822,856.10/x
  3. Step 3: Cross multiply
    12,127,528.20x = 18,191,292.30 × 7,822,856.10
  4. Step 4: Simplify right side
    12,127,528.20x = 142,307,861,935,938.03
  5. Step 5: Solve for x
    x = 142,307,861,935,938.03/12,127,528.20
  6. Step 6: Final answer
    x = 11,734,284.15

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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.