Home / 25,456.46-35,128.32-15,378.95

Finding the Fourth Proportional to 25,456.46, 35,128.32 and 15,378.95

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Solution

The fourth proportional to 25,456.46, 35,128.32 and 15,378.95 is: 21,221.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,456.46 : 35,128.32 = 15,378.95 : x
  2. Step 2: Convert to fraction form
    25,456.46/35,128.32 = 15,378.95/x
  3. Step 3: Cross multiply
    25,456.46x = 35,128.32 × 15,378.95
  4. Step 4: Simplify right side
    25,456.46x = 540,236,501.22
  5. Step 5: Solve for x
    x = 540,236,501.22/25,456.46
  6. Step 6: Final answer
    x = 21,221.98

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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.