Home / 25,890.17-35,729.30-15,279.57

Finding the Fourth Proportional to 25,890.17, 35,729.30 and 15,279.57

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Solution

The fourth proportional to 25,890.17, 35,729.30 and 15,279.57 is: 21,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,890.17 : 35,729.30 = 15,279.57 : x
  2. Step 2: Convert to fraction form
    25,890.17/35,729.30 = 15,279.57/x
  3. Step 3: Cross multiply
    25,890.17x = 35,729.30 × 15,279.57
  4. Step 4: Simplify right side
    25,890.17x = 545,928,378.60
  5. Step 5: Solve for x
    x = 545,928,378.60/25,890.17
  6. Step 6: Final answer
    x = 21,086.32

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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.