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Finding the Fourth Proportional to 8,692,751.70, 13,039,127.55 and 8,020,905.30

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Solution

The fourth proportional to 8,692,751.70, 13,039,127.55 and 8,020,905.30 is: 12,031,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692,751.70 : 13,039,127.55 = 8,020,905.30 : x
  2. Step 2: Convert to fraction form
    8,692,751.70/13,039,127.55 = 8,020,905.30/x
  3. Step 3: Cross multiply
    8,692,751.70x = 13,039,127.55 × 8,020,905.30
  4. Step 4: Simplify right side
    8,692,751.70x = 104,585,607,273,171.02
  5. Step 5: Solve for x
    x = 104,585,607,273,171.02/8,692,751.70
  6. Step 6: Final answer
    x = 12,031,357.95

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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.