Home / 20,770,158.05-31,155,237.08-11,812,206.05

Finding the Fourth Proportional to 20,770,158.05, 31,155,237.08 and 11,812,206.05

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Solution

The fourth proportional to 20,770,158.05, 31,155,237.08 and 11,812,206.05 is: 17,718,309.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770,158.05 : 31,155,237.08 = 11,812,206.05 : x
  2. Step 2: Convert to fraction form
    20,770,158.05/31,155,237.08 = 11,812,206.05/x
  3. Step 3: Cross multiply
    20,770,158.05x = 31,155,237.08 × 11,812,206.05
  4. Step 4: Simplify right side
    20,770,158.05x = 368,012,079,866,499.31
  5. Step 5: Solve for x
    x = 368,012,079,866,499.31/20,770,158.05
  6. Step 6: Final answer
    x = 17,718,309.08

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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.