Home / 12,591,720.80-18,887,581.20-4,072,918.40

Finding the Fourth Proportional to 12,591,720.80, 18,887,581.20 and 4,072,918.40

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Solution

The fourth proportional to 12,591,720.80, 18,887,581.20 and 4,072,918.40 is: 6,109,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591,720.80 : 18,887,581.20 = 4,072,918.40 : x
  2. Step 2: Convert to fraction form
    12,591,720.80/18,887,581.20 = 4,072,918.40/x
  3. Step 3: Cross multiply
    12,591,720.80x = 18,887,581.20 × 4,072,918.40
  4. Step 4: Simplify right side
    12,591,720.80x = 76,927,577,000,974.08
  5. Step 5: Solve for x
    x = 76,927,577,000,974.08/12,591,720.80
  6. Step 6: Final answer
    x = 6,109,377.60

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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.