Home / 30,854.75-42,579.55-17,425.78

Finding the Fourth Proportional to 30,854.75, 42,579.55 and 17,425.78

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Solution

The fourth proportional to 30,854.75, 42,579.55 and 17,425.78 is: 24,047.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,854.75 : 42,579.55 = 17,425.78 : x
  2. Step 2: Convert to fraction form
    30,854.75/42,579.55 = 17,425.78/x
  3. Step 3: Cross multiply
    30,854.75x = 42,579.55 × 17,425.78
  4. Step 4: Simplify right side
    30,854.75x = 741,981,762.32
  5. Step 5: Solve for x
    x = 741,981,762.32/30,854.75
  6. Step 6: Final answer
    x = 24,047.57

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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.