Home / 18,812,562.88-28,215,823.36-5,162,521.28

Finding the Fourth Proportional to 18,812,562.88, 28,215,823.36 and 5,162,521.28

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Solution

The fourth proportional to 18,812,562.88, 28,215,823.36 and 5,162,521.28 is: 7,742,952.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812,562.88 : 28,215,823.36 = 5,162,521.28 : x
  2. Step 2: Convert to fraction form
    18,812,562.88/28,215,823.36 = 5,162,521.28/x
  3. Step 3: Cross multiply
    18,812,562.88x = 28,215,823.36 × 5,162,521.28
  4. Step 4: Simplify right side
    18,812,562.88x = 145,664,788,528,721.09
  5. Step 5: Solve for x
    x = 145,664,788,528,721.09/18,812,562.88
  6. Step 6: Final answer
    x = 7,742,952.91

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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.