Home / 19,153,821.60-28,730,732.40-12,743,287.20

Finding the Fourth Proportional to 19,153,821.60, 28,730,732.40 and 12,743,287.20

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Solution

The fourth proportional to 19,153,821.60, 28,730,732.40 and 12,743,287.20 is: 19,114,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,153,821.60 : 28,730,732.40 = 12,743,287.20 : x
  2. Step 2: Convert to fraction form
    19,153,821.60/28,730,732.40 = 12,743,287.20/x
  3. Step 3: Cross multiply
    19,153,821.60x = 28,730,732.40 × 12,743,287.20
  4. Step 4: Simplify right side
    19,153,821.60x = 366,123,974,439,545.25
  5. Step 5: Solve for x
    x = 366,123,974,439,545.25/19,153,821.60
  6. Step 6: Final answer
    x = 19,114,930.80

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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.