Home / 30,868.42-42,596.20-18,122.13

Finding the Fourth Proportional to 30,868.42, 42,596.20 and 18,122.13

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Solution

The fourth proportional to 30,868.42, 42,596.20 and 18,122.13 is: 25,007.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,868.42 : 42,596.20 = 18,122.13 : x
  2. Step 2: Convert to fraction form
    30,868.42/42,596.20 = 18,122.13/x
  3. Step 3: Cross multiply
    30,868.42x = 42,596.20 × 18,122.13
  4. Step 4: Simplify right side
    30,868.42x = 771,933,873.91
  5. Step 5: Solve for x
    x = 771,933,873.91/30,868.42
  6. Step 6: Final answer
    x = 25,007.24

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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.