Home / 25,135.12-34,702.70-15,585.15

Finding the Fourth Proportional to 25,135.12, 34,702.70 and 15,585.15

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Solution

The fourth proportional to 25,135.12, 34,702.70 and 15,585.15 is: 21,517.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,135.12 : 34,702.70 = 15,585.15 : x
  2. Step 2: Convert to fraction form
    25,135.12/34,702.70 = 15,585.15/x
  3. Step 3: Cross multiply
    25,135.12x = 34,702.70 × 15,585.15
  4. Step 4: Simplify right side
    25,135.12x = 540,846,784.91
  5. Step 5: Solve for x
    x = 540,846,784.91/25,135.12
  6. Step 6: Final answer
    x = 21,517.57

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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.