Home / 25,513.20-35,208.90-15,439.50

Finding the Fourth Proportional to 25,513.20, 35,208.90 and 15,439.50

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Solution

The fourth proportional to 25,513.20, 35,208.90 and 15,439.50 is: 21,306.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,513.20 : 35,208.90 = 15,439.50 : x
  2. Step 2: Convert to fraction form
    25,513.20/35,208.90 = 15,439.50/x
  3. Step 3: Cross multiply
    25,513.20x = 35,208.90 × 15,439.50
  4. Step 4: Simplify right side
    25,513.20x = 543,607,811.55
  5. Step 5: Solve for x
    x = 543,607,811.55/25,513.20
  6. Step 6: Final answer
    x = 21,306.92

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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.