Home / 15,498,803.40-21,388,015.06-8,972,708.68

Finding the Fourth Proportional to 15,498,803.40, 21,388,015.06 and 8,972,708.68

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Solution

The fourth proportional to 15,498,803.40, 21,388,015.06 and 8,972,708.68 is: 12,382,144.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498,803.40 : 21,388,015.06 = 8,972,708.68 : x
  2. Step 2: Convert to fraction form
    15,498,803.40/21,388,015.06 = 8,972,708.68/x
  3. Step 3: Cross multiply
    15,498,803.40x = 21,388,015.06 × 8,972,708.68
  4. Step 4: Simplify right side
    15,498,803.40x = 191,908,428,376,832.69
  5. Step 5: Solve for x
    x = 191,908,428,376,832.69/15,498,803.40
  6. Step 6: Final answer
    x = 12,382,144.83

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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.