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Finding the Fourth Proportional to 11,927,864.80, 17,891,797.20 and 10,080,287.20

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Solution

The fourth proportional to 11,927,864.80, 17,891,797.20 and 10,080,287.20 is: 15,120,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,927,864.80 : 17,891,797.20 = 10,080,287.20 : x
  2. Step 2: Convert to fraction form
    11,927,864.80/17,891,797.20 = 10,080,287.20/x
  3. Step 3: Cross multiply
    11,927,864.80x = 17,891,797.20 × 10,080,287.20
  4. Step 4: Simplify right side
    11,927,864.80x = 180,354,454,300,155.81
  5. Step 5: Solve for x
    x = 180,354,454,300,155.81/11,927,864.80
  6. Step 6: Final answer
    x = 15,120,430.80

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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.