Home / 30,438.76-42,005.97-17,010.88

Finding the Fourth Proportional to 30,438.76, 42,005.97 and 17,010.88

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Solution

The fourth proportional to 30,438.76, 42,005.97 and 17,010.88 is: 23,475.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.76 : 42,005.97 = 17,010.88 : x
  2. Step 2: Convert to fraction form
    30,438.76/42,005.97 = 17,010.88/x
  3. Step 3: Cross multiply
    30,438.76x = 42,005.97 × 17,010.88
  4. Step 4: Simplify right side
    30,438.76x = 714,558,514.95
  5. Step 5: Solve for x
    x = 714,558,514.95/30,438.76
  6. Step 6: Final answer
    x = 23,475.28

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Half scale
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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.