Home / 25,865.80-35,693.86-15,811.08

Finding the Fourth Proportional to 25,865.80, 35,693.86 and 15,811.08

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Solution

The fourth proportional to 25,865.80, 35,693.86 and 15,811.08 is: 21,818.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,865.80 : 35,693.86 = 15,811.08 : x
  2. Step 2: Convert to fraction form
    25,865.80/35,693.86 = 15,811.08/x
  3. Step 3: Cross multiply
    25,865.80x = 35,693.86 × 15,811.08
  4. Step 4: Simplify right side
    25,865.80x = 564,358,475.97
  5. Step 5: Solve for x
    x = 564,358,475.97/25,865.80
  6. Step 6: Final answer
    x = 21,818.71

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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.