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Finding the Fourth Proportional to 18,374,957.60, 27,562,436.40 and 12,895,210.40

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Solution

The fourth proportional to 18,374,957.60, 27,562,436.40 and 12,895,210.40 is: 19,342,815.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374,957.60 : 27,562,436.40 = 12,895,210.40 : x
  2. Step 2: Convert to fraction form
    18,374,957.60/27,562,436.40 = 12,895,210.40/x
  3. Step 3: Cross multiply
    18,374,957.60x = 27,562,436.40 × 12,895,210.40
  4. Step 4: Simplify right side
    18,374,957.60x = 355,423,416,514,618.56
  5. Step 5: Solve for x
    x = 355,423,416,514,618.56/18,374,957.60
  6. Step 6: Final answer
    x = 19,342,815.60

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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.