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Finding the Fourth Proportional to 12,482,835.60, 18,692,760.60 and 9,963,411.60

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Solution

The fourth proportional to 12,482,835.60, 18,692,760.60 and 9,963,411.60 is: 14,919,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482,835.60 : 18,692,760.60 = 9,963,411.60 : x
  2. Step 2: Convert to fraction form
    12,482,835.60/18,692,760.60 = 9,963,411.60/x
  3. Step 3: Cross multiply
    12,482,835.60x = 18,692,760.60 × 9,963,411.60
  4. Step 4: Simplify right side
    12,482,835.60x = 186,243,667,798,062.97
  5. Step 5: Solve for x
    x = 186,243,667,798,062.97/12,482,835.60
  6. Step 6: Final answer
    x = 14,919,980.83

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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.