Home / 12,906,721.20-17,810,994.96-7,105,280.88

Finding the Fourth Proportional to 12,906,721.20, 17,810,994.96 and 7,105,280.88

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Solution

The fourth proportional to 12,906,721.20, 17,810,994.96 and 7,105,280.88 is: 9,805,133.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906,721.20 : 17,810,994.96 = 7,105,280.88 : x
  2. Step 2: Convert to fraction form
    12,906,721.20/17,810,994.96 = 7,105,280.88/x
  3. Step 3: Cross multiply
    12,906,721.20x = 17,810,994.96 × 7,105,280.88
  4. Step 4: Simplify right side
    12,906,721.20x = 126,552,121,943,064.38
  5. Step 5: Solve for x
    x = 126,552,121,943,064.38/12,906,721.20
  6. Step 6: Final answer
    x = 9,805,133.31

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1.5x scale

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.