Home / 21,141.04-31,711.56-7,290.04

Finding the Fourth Proportional to 21,141.04, 31,711.56 and 7,290.04

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Solution

The fourth proportional to 21,141.04, 31,711.56 and 7,290.04 is: 10,935.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.04 : 31,711.56 = 7,290.04 : x
  2. Step 2: Convert to fraction form
    21,141.04/31,711.56 = 7,290.04/x
  3. Step 3: Cross multiply
    21,141.04x = 31,711.56 × 7,290.04
  4. Step 4: Simplify right side
    21,141.04x = 231,178,540.86
  5. Step 5: Solve for x
    x = 231,178,540.86/21,141.04
  6. Step 6: Final answer
    x = 10,935.06

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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.