Home / 15,304,154.45-21,120,687.56-8,428,634.69

Finding the Fourth Proportional to 15,304,154.45, 21,120,687.56 and 8,428,634.69

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Solution

The fourth proportional to 15,304,154.45, 21,120,687.56 and 8,428,634.69 is: 11,632,041.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304,154.45 : 21,120,687.56 = 8,428,634.69 : x
  2. Step 2: Convert to fraction form
    15,304,154.45/21,120,687.56 = 8,428,634.69/x
  3. Step 3: Cross multiply
    15,304,154.45x = 21,120,687.56 × 8,428,634.69
  4. Step 4: Simplify right side
    15,304,154.45x = 178,018,559,855,526.03
  5. Step 5: Solve for x
    x = 178,018,559,855,526.03/15,304,154.45
  6. Step 6: Final answer
    x = 11,632,041.51

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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.