Home / 12,887,965.98-17,785,457.07-7,087,121.82

Finding the Fourth Proportional to 12,887,965.98, 17,785,457.07 and 7,087,121.82

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Solution

The fourth proportional to 12,887,965.98, 17,785,457.07 and 7,087,121.82 is: 9,780,263.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,965.98 : 17,785,457.07 = 7,087,121.82 : x
  2. Step 2: Convert to fraction form
    12,887,965.98/17,785,457.07 = 7,087,121.82/x
  3. Step 3: Cross multiply
    12,887,965.98x = 17,785,457.07 × 7,087,121.82
  4. Step 4: Simplify right side
    12,887,965.98x = 126,047,700,879,470.28
  5. Step 5: Solve for x
    x = 126,047,700,879,470.28/12,887,965.98
  6. Step 6: Final answer
    x = 9,780,263.32

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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.