Home / 25,206.78-34,786.14-13,875.66

Finding the Fourth Proportional to 25,206.78, 34,786.14 and 13,875.66

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Solution

The fourth proportional to 25,206.78, 34,786.14 and 13,875.66 is: 19,148.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,206.78 : 34,786.14 = 13,875.66 : x
  2. Step 2: Convert to fraction form
    25,206.78/34,786.14 = 13,875.66/x
  3. Step 3: Cross multiply
    25,206.78x = 34,786.14 × 13,875.66
  4. Step 4: Simplify right side
    25,206.78x = 482,680,651.35
  5. Step 5: Solve for x
    x = 482,680,651.35/25,206.78
  6. Step 6: Final answer
    x = 19,148.84

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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.