Home / 28,142.56-38,819.81-18,582.53

Finding the Fourth Proportional to 28,142.56, 38,819.81 and 18,582.53

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Solution

The fourth proportional to 28,142.56, 38,819.81 and 18,582.53 is: 25,632.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.56 : 38,819.81 = 18,582.53 : x
  2. Step 2: Convert to fraction form
    28,142.56/38,819.81 = 18,582.53/x
  3. Step 3: Cross multiply
    28,142.56x = 38,819.81 × 18,582.53
  4. Step 4: Simplify right side
    28,142.56x = 721,370,191.01
  5. Step 5: Solve for x
    x = 721,370,191.01/28,142.56
  6. Step 6: Final answer
    x = 25,632.72

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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.