Home / 18,773,787.70-28,172,528.28-7,991,071.24

Finding the Fourth Proportional to 18,773,787.70, 28,172,528.28 and 7,991,071.24

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Solution

The fourth proportional to 18,773,787.70, 28,172,528.28 and 7,991,071.24 is: 11,991,649.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773,787.70 : 28,172,528.28 = 7,991,071.24 : x
  2. Step 2: Convert to fraction form
    18,773,787.70/28,172,528.28 = 7,991,071.24/x
  3. Step 3: Cross multiply
    18,773,787.70x = 28,172,528.28 × 7,991,071.24
  4. Step 4: Simplify right side
    18,773,787.70x = 225,128,680,496,394.69
  5. Step 5: Solve for x
    x = 225,128,680,496,394.69/18,773,787.70
  6. Step 6: Final answer
    x = 11,991,649.43

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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.