Home / 21,387,132.40-32,080,698.60-20,631,305.20

Finding the Fourth Proportional to 21,387,132.40, 32,080,698.60 and 20,631,305.20

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Solution

The fourth proportional to 21,387,132.40, 32,080,698.60 and 20,631,305.20 is: 30,946,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387,132.40 : 32,080,698.60 = 20,631,305.20 : x
  2. Step 2: Convert to fraction form
    21,387,132.40/32,080,698.60 = 20,631,305.20/x
  3. Step 3: Cross multiply
    21,387,132.40x = 32,080,698.60 × 20,631,305.20
  4. Step 4: Simplify right side
    21,387,132.40x = 661,866,683,845,812.75
  5. Step 5: Solve for x
    x = 661,866,683,845,812.75/21,387,132.40
  6. Step 6: Final answer
    x = 30,946,957.80

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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.