Home / 18,959,411.20-28,439,116.80-12,156,966.40

Finding the Fourth Proportional to 18,959,411.20, 28,439,116.80 and 12,156,966.40

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Solution

The fourth proportional to 18,959,411.20, 28,439,116.80 and 12,156,966.40 is: 18,235,449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959,411.20 : 28,439,116.80 = 12,156,966.40 : x
  2. Step 2: Convert to fraction form
    18,959,411.20/28,439,116.80 = 12,156,966.40/x
  3. Step 3: Cross multiply
    18,959,411.20x = 28,439,116.80 × 12,156,966.40
  4. Step 4: Simplify right side
    18,959,411.20x = 345,733,387,383,275.56
  5. Step 5: Solve for x
    x = 345,733,387,383,275.56/18,959,411.20
  6. Step 6: Final answer
    x = 18,235,449.60

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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.