Home / 25,228.90-34,785.04-15,781.06

Finding the Fourth Proportional to 25,228.90, 34,785.04 and 15,781.06

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Solution

The fourth proportional to 25,228.90, 34,785.04 and 15,781.06 is: 21,758.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,228.90 : 34,785.04 = 15,781.06 : x
  2. Step 2: Convert to fraction form
    25,228.90/34,785.04 = 15,781.06/x
  3. Step 3: Cross multiply
    25,228.90x = 34,785.04 × 15,781.06
  4. Step 4: Simplify right side
    25,228.90x = 548,944,803.34
  5. Step 5: Solve for x
    x = 548,944,803.34/25,228.90
  6. Step 6: Final answer
    x = 21,758.57

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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.