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Finding the Fourth Proportional to 12,482,402.60, 18,692,111.10 and 9,962,978.60

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Solution

The fourth proportional to 12,482,402.60, 18,692,111.10 and 9,962,978.60 is: 14,919,331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482,402.60 : 18,692,111.10 = 9,962,978.60 : x
  2. Step 2: Convert to fraction form
    12,482,402.60/18,692,111.10 = 9,962,978.60/x
  3. Step 3: Cross multiply
    12,482,402.60x = 18,692,111.10 × 9,962,978.60
  4. Step 4: Simplify right side
    12,482,402.60x = 186,229,102,878,122.47
  5. Step 5: Solve for x
    x = 186,229,102,878,122.47/12,482,402.60
  6. Step 6: Final answer
    x = 14,919,331.55

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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.