Home / 12,975,979.20-17,906,127.68-7,174,412.48

Finding the Fourth Proportional to 12,975,979.20, 17,906,127.68 and 7,174,412.48

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Solution

The fourth proportional to 12,975,979.20, 17,906,127.68 and 7,174,412.48 is: 9,900,289.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975,979.20 : 17,906,127.68 = 7,174,412.48 : x
  2. Step 2: Convert to fraction form
    12,975,979.20/17,906,127.68 = 7,174,412.48/x
  3. Step 3: Cross multiply
    12,975,979.20x = 17,906,127.68 × 7,174,412.48
  4. Step 4: Simplify right side
    12,975,979.20x = 128,465,945,895,865.45
  5. Step 5: Solve for x
    x = 128,465,945,895,865.45/12,975,979.20
  6. Step 6: Final answer
    x = 9,900,289.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.