Home / 21,191.13-31,786.70-7,340.13

Finding the Fourth Proportional to 21,191.13, 31,786.70 and 7,340.13

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Solution

The fourth proportional to 21,191.13, 31,786.70 and 7,340.13 is: 11,010.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.13 : 31,786.70 = 7,340.13 : x
  2. Step 2: Convert to fraction form
    21,191.13/31,786.70 = 7,340.13/x
  3. Step 3: Cross multiply
    21,191.13x = 31,786.70 × 7,340.13
  4. Step 4: Simplify right side
    21,191.13x = 233,318,510.27
  5. Step 5: Solve for x
    x = 233,318,510.27/21,191.13
  6. Step 6: Final answer
    x = 11,010.20

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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.