Home / 18,715,000.40-28,025,261.40-12,290,469.20

Finding the Fourth Proportional to 18,715,000.40, 28,025,261.40 and 12,290,469.20

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Solution

The fourth proportional to 18,715,000.40, 28,025,261.40 and 12,290,469.20 is: 18,404,680.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,000.40 : 28,025,261.40 = 12,290,469.20 : x
  2. Step 2: Convert to fraction form
    18,715,000.40/28,025,261.40 = 12,290,469.20/x
  3. Step 3: Cross multiply
    18,715,000.40x = 28,025,261.40 × 12,290,469.20
  4. Step 4: Simplify right side
    18,715,000.40x = 344,443,612,058,648.81
  5. Step 5: Solve for x
    x = 344,443,612,058,648.81/18,715,000.40
  6. Step 6: Final answer
    x = 18,404,680.99

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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.