Home / 21,190.59-31,774.91-8,708.31

Finding the Fourth Proportional to 21,190.59, 31,774.91 and 8,708.31

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Solution

The fourth proportional to 21,190.59, 31,774.91 and 8,708.31 is: 13,057.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.59 : 31,774.91 = 8,708.31 : x
  2. Step 2: Convert to fraction form
    21,190.59/31,774.91 = 8,708.31/x
  3. Step 3: Cross multiply
    21,190.59x = 31,774.91 × 8,708.31
  4. Step 4: Simplify right side
    21,190.59x = 276,705,722.96
  5. Step 5: Solve for x
    x = 276,705,722.96/21,190.59
  6. Step 6: Final answer
    x = 13,057.95

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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.