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Finding the Fourth Proportional to 8,487,764.30, 12,712,984.05 and 7,368,020.30

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Solution

The fourth proportional to 8,487,764.30, 12,712,984.05 and 7,368,020.30 is: 11,035,830.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487,764.30 : 12,712,984.05 = 7,368,020.30 : x
  2. Step 2: Convert to fraction form
    8,487,764.30/12,712,984.05 = 7,368,020.30/x
  3. Step 3: Cross multiply
    8,487,764.30x = 12,712,984.05 × 7,368,020.30
  4. Step 4: Simplify right side
    8,487,764.30x = 93,669,524,553,976.22
  5. Step 5: Solve for x
    x = 93,669,524,553,976.22/8,487,764.30
  6. Step 6: Final answer
    x = 11,035,830.08

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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.