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Finding the Fourth Proportional to 18,861,829.40, 28,292,744.10 and 17,745,803.30

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Solution

The fourth proportional to 18,861,829.40, 28,292,744.10 and 17,745,803.30 is: 26,618,704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861,829.40 : 28,292,744.10 = 17,745,803.30 : x
  2. Step 2: Convert to fraction form
    18,861,829.40/28,292,744.10 = 17,745,803.30/x
  3. Step 3: Cross multiply
    18,861,829.40x = 28,292,744.10 × 17,745,803.30
  4. Step 4: Simplify right side
    18,861,829.40x = 502,077,471,615,835.56
  5. Step 5: Solve for x
    x = 502,077,471,615,835.56/18,861,829.40
  6. Step 6: Final answer
    x = 26,618,704.95

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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.