Home / 25,143.84-34,698.60-15,717.78

Finding the Fourth Proportional to 25,143.84, 34,698.60 and 15,717.78

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Solution

The fourth proportional to 25,143.84, 34,698.60 and 15,717.78 is: 21,690.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,143.84 : 34,698.60 = 15,717.78 : x
  2. Step 2: Convert to fraction form
    25,143.84/34,698.60 = 15,717.78/x
  3. Step 3: Cross multiply
    25,143.84x = 34,698.60 × 15,717.78
  4. Step 4: Simplify right side
    25,143.84x = 545,384,961.11
  5. Step 5: Solve for x
    x = 545,384,961.11/25,143.84
  6. Step 6: Final answer
    x = 21,690.60

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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.