Home / 25,143.56-34,678.66-18,426.68

Finding the Fourth Proportional to 25,143.56, 34,678.66 and 18,426.68

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Solution

The fourth proportional to 25,143.56, 34,678.66 and 18,426.68 is: 25,414.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,143.56 : 34,678.66 = 18,426.68 : x
  2. Step 2: Convert to fraction form
    25,143.56/34,678.66 = 18,426.68/x
  3. Step 3: Cross multiply
    25,143.56x = 34,678.66 × 18,426.68
  4. Step 4: Simplify right side
    25,143.56x = 639,012,570.65
  5. Step 5: Solve for x
    x = 639,012,570.65/25,143.56
  6. Step 6: Final answer
    x = 25,414.56

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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.