Home / 19,719,979.20-29,579,968.80-9,103,147.20

Finding the Fourth Proportional to 19,719,979.20, 29,579,968.80 and 9,103,147.20

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Solution

The fourth proportional to 19,719,979.20, 29,579,968.80 and 9,103,147.20 is: 13,654,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719,979.20 : 29,579,968.80 = 9,103,147.20 : x
  2. Step 2: Convert to fraction form
    19,719,979.20/29,579,968.80 = 9,103,147.20/x
  3. Step 3: Cross multiply
    19,719,979.20x = 29,579,968.80 × 9,103,147.20
  4. Step 4: Simplify right side
    19,719,979.20x = 269,270,810,157,807.34
  5. Step 5: Solve for x
    x = 269,270,810,157,807.34/19,719,979.20
  6. Step 6: Final answer
    x = 13,654,720.80

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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.