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Finding the Fourth Proportional to 18,438,657.40, 27,657,986.10 and 17,493,873.40

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Solution

The fourth proportional to 18,438,657.40, 27,657,986.10 and 17,493,873.40 is: 26,240,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438,657.40 : 27,657,986.10 = 17,493,873.40 : x
  2. Step 2: Convert to fraction form
    18,438,657.40/27,657,986.10 = 17,493,873.40/x
  3. Step 3: Cross multiply
    18,438,657.40x = 27,657,986.10 × 17,493,873.40
  4. Step 4: Simplify right side
    18,438,657.40x = 483,845,307,332,359.75
  5. Step 5: Solve for x
    x = 483,845,307,332,359.75/18,438,657.40
  6. Step 6: Final answer
    x = 26,240,810.10

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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.