Home / 20,683,646.40-31,025,469.60-10,479,979.20

Finding the Fourth Proportional to 20,683,646.40, 31,025,469.60 and 10,479,979.20

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Solution

The fourth proportional to 20,683,646.40, 31,025,469.60 and 10,479,979.20 is: 15,719,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683,646.40 : 31,025,469.60 = 10,479,979.20 : x
  2. Step 2: Convert to fraction form
    20,683,646.40/31,025,469.60 = 10,479,979.20/x
  3. Step 3: Cross multiply
    20,683,646.40x = 31,025,469.60 × 10,479,979.20
  4. Step 4: Simplify right side
    20,683,646.40x = 325,146,276,078,232.31
  5. Step 5: Solve for x
    x = 325,146,276,078,232.31/20,683,646.40
  6. Step 6: Final answer
    x = 15,719,968.80

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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.