Home / 30,807.95-42,514.88-16,660.69

Finding the Fourth Proportional to 30,807.95, 42,514.88 and 16,660.69

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Solution

The fourth proportional to 30,807.95, 42,514.88 and 16,660.69 is: 22,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.95 : 42,514.88 = 16,660.69 : x
  2. Step 2: Convert to fraction form
    30,807.95/42,514.88 = 16,660.69/x
  3. Step 3: Cross multiply
    30,807.95x = 42,514.88 × 16,660.69
  4. Step 4: Simplify right side
    30,807.95x = 708,327,046.48
  5. Step 5: Solve for x
    x = 708,327,046.48/30,807.95
  6. Step 6: Final answer
    x = 22,991.70

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Half scale
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Double scale
Find fourth proportional to 30,808.95, 42,516.25 and 16,661.69
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.