Home / 25,780.40-35,585.40-15,169.52

Finding the Fourth Proportional to 25,780.40, 35,585.40 and 15,169.52

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Solution

The fourth proportional to 25,780.40, 35,585.40 and 15,169.52 is: 20,938.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,780.40 : 35,585.40 = 15,169.52 : x
  2. Step 2: Convert to fraction form
    25,780.40/35,585.40 = 15,169.52/x
  3. Step 3: Cross multiply
    25,780.40x = 35,585.40 × 15,169.52
  4. Step 4: Simplify right side
    25,780.40x = 539,813,437.01
  5. Step 5: Solve for x
    x = 539,813,437.01/25,780.40
  6. Step 6: Final answer
    x = 20,938.91

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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.