Home / 30,521.43-42,121.08-18,582.84

Finding the Fourth Proportional to 30,521.43, 42,121.08 and 18,582.84

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Solution

The fourth proportional to 30,521.43, 42,121.08 and 18,582.84 is: 25,645.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,521.43 : 42,121.08 = 18,582.84 : x
  2. Step 2: Convert to fraction form
    30,521.43/42,121.08 = 18,582.84/x
  3. Step 3: Cross multiply
    30,521.43x = 42,121.08 × 18,582.84
  4. Step 4: Simplify right side
    30,521.43x = 782,729,290.27
  5. Step 5: Solve for x
    x = 782,729,290.27/30,521.43
  6. Step 6: Final answer
    x = 25,645.24

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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.