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Finding the Fourth Proportional to 18,944,003.20, 28,416,004.80 and 11,379,510.40

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Solution

The fourth proportional to 18,944,003.20, 28,416,004.80 and 11,379,510.40 is: 17,069,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,944,003.20 : 28,416,004.80 = 11,379,510.40 : x
  2. Step 2: Convert to fraction form
    18,944,003.20/28,416,004.80 = 11,379,510.40/x
  3. Step 3: Cross multiply
    18,944,003.20x = 28,416,004.80 × 11,379,510.40
  4. Step 4: Simplify right side
    18,944,003.20x = 323,360,222,148,049.94
  5. Step 5: Solve for x
    x = 323,360,222,148,049.94/18,944,003.20
  6. Step 6: Final answer
    x = 17,069,265.60

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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.