Home / 20,581.34-28,391.82-13,014.92

Finding the Fourth Proportional to 20,581.34, 28,391.82 and 13,014.92

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Solution

The fourth proportional to 20,581.34, 28,391.82 and 13,014.92 is: 17,953.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.34 : 28,391.82 = 13,014.92 : x
  2. Step 2: Convert to fraction form
    20,581.34/28,391.82 = 13,014.92/x
  3. Step 3: Cross multiply
    20,581.34x = 28,391.82 × 13,014.92
  4. Step 4: Simplify right side
    20,581.34x = 369,517,265.95
  5. Step 5: Solve for x
    x = 369,517,265.95/20,581.34
  6. Step 6: Final answer
    x = 17,953.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.