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Finding the Fourth Proportional to 9,308,981.70, 13,963,472.55 and 8,637,135.30

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Solution

The fourth proportional to 9,308,981.70, 13,963,472.55 and 8,637,135.30 is: 12,955,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,308,981.70 : 13,963,472.55 = 8,637,135.30 : x
  2. Step 2: Convert to fraction form
    9,308,981.70/13,963,472.55 = 8,637,135.30/x
  3. Step 3: Cross multiply
    9,308,981.70x = 13,963,472.55 × 8,637,135.30
  4. Step 4: Simplify right side
    9,308,981.70x = 120,604,401,672,186.03
  5. Step 5: Solve for x
    x = 120,604,401,672,186.03/9,308,981.70
  6. Step 6: Final answer
    x = 12,955,702.95

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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.