Home / 12,975,965.46-17,906,109.75-7,174,398.78

Finding the Fourth Proportional to 12,975,965.46, 17,906,109.75 and 7,174,398.78

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Solution

The fourth proportional to 12,975,965.46, 17,906,109.75 and 7,174,398.78 is: 9,900,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975,965.46 : 17,906,109.75 = 7,174,398.78 : x
  2. Step 2: Convert to fraction form
    12,975,965.46/17,906,109.75 = 7,174,398.78/x
  3. Step 3: Cross multiply
    12,975,965.46x = 17,906,109.75 × 7,174,398.78
  4. Step 4: Simplify right side
    12,975,965.46x = 128,465,571,944,946.11
  5. Step 5: Solve for x
    x = 128,465,571,944,946.11/12,975,965.46
  6. Step 6: Final answer
    x = 9,900,270.80

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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.