Home / 10,659,085.80-15,988,628.70-7,971,700.20

Finding the Fourth Proportional to 10,659,085.80, 15,988,628.70 and 7,971,700.20

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Solution

The fourth proportional to 10,659,085.80, 15,988,628.70 and 7,971,700.20 is: 11,957,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,659,085.80 : 15,988,628.70 = 7,971,700.20 : x
  2. Step 2: Convert to fraction form
    10,659,085.80/15,988,628.70 = 7,971,700.20/x
  3. Step 3: Cross multiply
    10,659,085.80x = 15,988,628.70 × 7,971,700.20
  4. Step 4: Simplify right side
    10,659,085.80x = 127,456,554,605,515.73
  5. Step 5: Solve for x
    x = 127,456,554,605,515.73/10,659,085.80
  6. Step 6: Final answer
    x = 11,957,550.30

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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.