Home / 25,378.11-35,017.65-15,939.99

Finding the Fourth Proportional to 25,378.11, 35,017.65 and 15,939.99

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Solution

The fourth proportional to 25,378.11, 35,017.65 and 15,939.99 is: 21,994.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,378.11 : 35,017.65 = 15,939.99 : x
  2. Step 2: Convert to fraction form
    25,378.11/35,017.65 = 15,939.99/x
  3. Step 3: Cross multiply
    25,378.11x = 35,017.65 × 15,939.99
  4. Step 4: Simplify right side
    25,378.11x = 558,180,990.82
  5. Step 5: Solve for x
    x = 558,180,990.82/25,378.11
  6. Step 6: Final answer
    x = 21,994.58

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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.