Home / 30,680.28-42,340.28-17,255.76

Finding the Fourth Proportional to 30,680.28, 42,340.28 and 17,255.76

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Solution

The fourth proportional to 30,680.28, 42,340.28 and 17,255.76 is: 23,813.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,680.28 : 42,340.28 = 17,255.76 : x
  2. Step 2: Convert to fraction form
    30,680.28/42,340.28 = 17,255.76/x
  3. Step 3: Cross multiply
    30,680.28x = 42,340.28 × 17,255.76
  4. Step 4: Simplify right side
    30,680.28x = 730,613,710.01
  5. Step 5: Solve for x
    x = 730,613,710.01/30,680.28
  6. Step 6: Final answer
    x = 23,813.79

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Double scale
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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.