Home / 20,770,162.80-31,155,244.20-11,812,210.80

Finding the Fourth Proportional to 20,770,162.80, 31,155,244.20 and 11,812,210.80

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Solution

The fourth proportional to 20,770,162.80, 31,155,244.20 and 11,812,210.80 is: 17,718,316.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770,162.80 : 31,155,244.20 = 11,812,210.80 : x
  2. Step 2: Convert to fraction form
    20,770,162.80/31,155,244.20 = 11,812,210.80/x
  3. Step 3: Cross multiply
    20,770,162.80x = 31,155,244.20 × 11,812,210.80
  4. Step 4: Simplify right side
    20,770,162.80x = 368,012,312,015,877.38
  5. Step 5: Solve for x
    x = 368,012,312,015,877.38/20,770,162.80
  6. Step 6: Final answer
    x = 17,718,316.20

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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.