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Finding the Fourth Proportional to 18,722,521.40, 28,041,791.70 and 18,722,521.40

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Solution

The fourth proportional to 18,722,521.40, 28,041,791.70 and 18,722,521.40 is: 28,041,791.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,521.40 : 28,041,791.70 = 18,722,521.40 : x
  2. Step 2: Convert to fraction form
    18,722,521.40/28,041,791.70 = 18,722,521.40/x
  3. Step 3: Cross multiply
    18,722,521.40x = 28,041,791.70 × 18,722,521.40
  4. Step 4: Simplify right side
    18,722,521.40x = 525,013,045,197,592.31
  5. Step 5: Solve for x
    x = 525,013,045,197,592.31/18,722,521.40
  6. Step 6: Final answer
    x = 28,041,791.70

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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.