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Finding the Fourth Proportional to 18,145,411.60, 27,218,117.40 and 18,145,411.60

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Solution

The fourth proportional to 18,145,411.60, 27,218,117.40 and 18,145,411.60 is: 27,218,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145,411.60 : 27,218,117.40 = 18,145,411.60 : x
  2. Step 2: Convert to fraction form
    18,145,411.60/27,218,117.40 = 18,145,411.60/x
  3. Step 3: Cross multiply
    18,145,411.60x = 27,218,117.40 × 18,145,411.60
  4. Step 4: Simplify right side
    18,145,411.60x = 493,883,943,200,121.88
  5. Step 5: Solve for x
    x = 493,883,943,200,121.88/18,145,411.60
  6. Step 6: Final answer
    x = 27,218,117.40

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Double scale
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1.5x scale

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.