Home / 20,678,851.20-31,018,276.80-11,608,924.80

Finding the Fourth Proportional to 20,678,851.20, 31,018,276.80 and 11,608,924.80

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Solution

The fourth proportional to 20,678,851.20, 31,018,276.80 and 11,608,924.80 is: 17,413,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,851.20 : 31,018,276.80 = 11,608,924.80 : x
  2. Step 2: Convert to fraction form
    20,678,851.20/31,018,276.80 = 11,608,924.80/x
  3. Step 3: Cross multiply
    20,678,851.20x = 31,018,276.80 × 11,608,924.80
  4. Step 4: Simplify right side
    20,678,851.20x = 360,088,842,796,784.69
  5. Step 5: Solve for x
    x = 360,088,842,796,784.69/20,678,851.20
  6. Step 6: Final answer
    x = 17,413,387.20

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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.