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Finding the Fourth Proportional to 13,409,728.30, 20,114,592.45 and 4,890,342.70

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Solution

The fourth proportional to 13,409,728.30, 20,114,592.45 and 4,890,342.70 is: 7,335,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409,728.30 : 20,114,592.45 = 4,890,342.70 : x
  2. Step 2: Convert to fraction form
    13,409,728.30/20,114,592.45 = 4,890,342.70/x
  3. Step 3: Cross multiply
    13,409,728.30x = 20,114,592.45 × 4,890,342.70
  4. Step 4: Simplify right side
    13,409,728.30x = 98,367,250,351,332.61
  5. Step 5: Solve for x
    x = 98,367,250,351,332.61/13,409,728.30
  6. Step 6: Final answer
    x = 7,335,514.05

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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.