Home / 21,191.48-31,785.81-8,708.27

Finding the Fourth Proportional to 21,191.48, 31,785.81 and 8,708.27

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Solution

The fourth proportional to 21,191.48, 31,785.81 and 8,708.27 is: 13,061.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.48 : 31,785.81 = 8,708.27 : x
  2. Step 2: Convert to fraction form
    21,191.48/31,785.81 = 8,708.27/x
  3. Step 3: Cross multiply
    21,191.48x = 31,785.81 × 8,708.27
  4. Step 4: Simplify right side
    21,191.48x = 276,799,415.65
  5. Step 5: Solve for x
    x = 276,799,415.65/21,191.48
  6. Step 6: Final answer
    x = 13,061.83

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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.