Home / 18,959,397.20-28,439,095.80-12,156,952.40

Finding the Fourth Proportional to 18,959,397.20, 28,439,095.80 and 12,156,952.40

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Solution

The fourth proportional to 18,959,397.20, 28,439,095.80 and 12,156,952.40 is: 18,235,428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959,397.20 : 28,439,095.80 = 12,156,952.40 : x
  2. Step 2: Convert to fraction form
    18,959,397.20/28,439,095.80 = 12,156,952.40/x
  3. Step 3: Cross multiply
    18,959,397.20x = 28,439,095.80 × 12,156,952.40
  4. Step 4: Simplify right side
    18,959,397.20x = 345,732,733,939,639.94
  5. Step 5: Solve for x
    x = 345,732,733,939,639.94/18,959,397.20
  6. Step 6: Final answer
    x = 18,235,428.60

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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.