Home / 20,971.32-31,456.98-17,265.76

Finding the Fourth Proportional to 20,971.32, 31,456.98 and 17,265.76

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Solution

The fourth proportional to 20,971.32, 31,456.98 and 17,265.76 is: 25,898.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.32 : 31,456.98 = 17,265.76 : x
  2. Step 2: Convert to fraction form
    20,971.32/31,456.98 = 17,265.76/x
  3. Step 3: Cross multiply
    20,971.32x = 31,456.98 × 17,265.76
  4. Step 4: Simplify right side
    20,971.32x = 543,128,642.93
  5. Step 5: Solve for x
    x = 543,128,642.93/20,971.32
  6. Step 6: Final answer
    x = 25,898.64

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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.