Home / 30,807.89-42,514.90-16,660.73

Finding the Fourth Proportional to 30,807.89, 42,514.90 and 16,660.73

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Solution

The fourth proportional to 30,807.89, 42,514.90 and 16,660.73 is: 22,991.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.89 : 42,514.90 = 16,660.73 : x
  2. Step 2: Convert to fraction form
    30,807.89/42,514.90 = 16,660.73/x
  3. Step 3: Cross multiply
    30,807.89x = 42,514.90 × 16,660.73
  4. Step 4: Simplify right side
    30,807.89x = 708,329,334.51
  5. Step 5: Solve for x
    x = 708,329,334.51/30,807.89
  6. Step 6: Final answer
    x = 22,991.82

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Half scale
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Double scale
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Similar ratio
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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.