Home / 20,857,084.06-31,287,988.08-18,713,999.02

Finding the Fourth Proportional to 20,857,084.06, 31,287,988.08 and 18,713,999.02

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Solution

The fourth proportional to 20,857,084.06, 31,287,988.08 and 18,713,999.02 is: 28,073,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857,084.06 : 31,287,988.08 = 18,713,999.02 : x
  2. Step 2: Convert to fraction form
    20,857,084.06/31,287,988.08 = 18,713,999.02/x
  3. Step 3: Cross multiply
    20,857,084.06x = 31,287,988.08 × 18,713,999.02
  4. Step 4: Simplify right side
    20,857,084.06x = 585,523,378,266,891.62
  5. Step 5: Solve for x
    x = 585,523,378,266,891.62/20,857,084.06
  6. Step 6: Final answer
    x = 28,073,117.82

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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.