Home / 18,812,603.52-28,215,882.72-5,162,561.28

Finding the Fourth Proportional to 18,812,603.52, 28,215,882.72 and 5,162,561.28

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Solution

The fourth proportional to 18,812,603.52, 28,215,882.72 and 5,162,561.28 is: 7,743,012.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812,603.52 : 28,215,882.72 = 5,162,561.28 : x
  2. Step 2: Convert to fraction form
    18,812,603.52/28,215,882.72 = 5,162,561.28/x
  3. Step 3: Cross multiply
    18,812,603.52x = 28,215,882.72 × 5,162,561.28
  4. Step 4: Simplify right side
    18,812,603.52x = 145,666,223,611,293.09
  5. Step 5: Solve for x
    x = 145,666,223,611,293.09/18,812,603.52
  6. Step 6: Final answer
    x = 7,743,012.47

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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.