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Finding the Fourth Proportional to 10,992,941.20, 16,489,411.80 and 8,264,877.40

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Solution

The fourth proportional to 10,992,941.20, 16,489,411.80 and 8,264,877.40 is: 12,397,316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992,941.20 : 16,489,411.80 = 8,264,877.40 : x
  2. Step 2: Convert to fraction form
    10,992,941.20/16,489,411.80 = 8,264,877.40/x
  3. Step 3: Cross multiply
    10,992,941.20x = 16,489,411.80 × 8,264,877.40
  4. Step 4: Simplify right side
    10,992,941.20x = 136,282,966,925,113.33
  5. Step 5: Solve for x
    x = 136,282,966,925,113.33/10,992,941.20
  6. Step 6: Final answer
    x = 12,397,316.10

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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.