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Finding the Fourth Proportional to 18,508,735.80, 27,763,103.70 and 10,931,801.40

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Solution

The fourth proportional to 18,508,735.80, 27,763,103.70 and 10,931,801.40 is: 16,397,702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508,735.80 : 27,763,103.70 = 10,931,801.40 : x
  2. Step 2: Convert to fraction form
    18,508,735.80/27,763,103.70 = 10,931,801.40/x
  3. Step 3: Cross multiply
    18,508,735.80x = 27,763,103.70 × 10,931,801.40
  4. Step 4: Simplify right side
    18,508,735.80x = 303,500,735,896,005.19
  5. Step 5: Solve for x
    x = 303,500,735,896,005.19/18,508,735.80
  6. Step 6: Final answer
    x = 16,397,702.10

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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.