Home / 25,456.70-35,139.58-15,385.52

Finding the Fourth Proportional to 25,456.70, 35,139.58 and 15,385.52

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Solution

The fourth proportional to 25,456.70, 35,139.58 and 15,385.52 is: 21,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,456.70 : 35,139.58 = 15,385.52 : x
  2. Step 2: Convert to fraction form
    25,456.70/35,139.58 = 15,385.52/x
  3. Step 3: Cross multiply
    25,456.70x = 35,139.58 × 15,385.52
  4. Step 4: Simplify right side
    25,456.70x = 540,640,633.95
  5. Step 5: Solve for x
    x = 540,640,633.95/25,456.70
  6. Step 6: Final answer
    x = 21,237.66

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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.