Home / 30,151.30-41,581.56-18,821.84

Finding the Fourth Proportional to 30,151.30, 41,581.56 and 18,821.84

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Solution

The fourth proportional to 30,151.30, 41,581.56 and 18,821.84 is: 25,957.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.30 : 41,581.56 = 18,821.84 : x
  2. Step 2: Convert to fraction form
    30,151.30/41,581.56 = 18,821.84/x
  3. Step 3: Cross multiply
    30,151.30x = 41,581.56 × 18,821.84
  4. Step 4: Simplify right side
    30,151.30x = 782,641,518.14
  5. Step 5: Solve for x
    x = 782,641,518.14/30,151.30
  6. Step 6: Final answer
    x = 25,957.14

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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.