Home / 18,959,239.20-28,438,858.80-12,156,794.40

Finding the Fourth Proportional to 18,959,239.20, 28,438,858.80 and 12,156,794.40

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Solution

The fourth proportional to 18,959,239.20, 28,438,858.80 and 12,156,794.40 is: 18,235,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959,239.20 : 28,438,858.80 = 12,156,794.40 : x
  2. Step 2: Convert to fraction form
    18,959,239.20/28,438,858.80 = 12,156,794.40/x
  3. Step 3: Cross multiply
    18,959,239.20x = 28,438,858.80 × 12,156,794.40
  4. Step 4: Simplify right side
    18,959,239.20x = 345,725,359,402,230.75
  5. Step 5: Solve for x
    x = 345,725,359,402,230.75/18,959,239.20
  6. Step 6: Final answer
    x = 18,235,191.60

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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.