Home / 18,777.18-25,913.75-10,819.91

Finding the Fourth Proportional to 18,777.18, 25,913.75 and 10,819.91

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Solution

The fourth proportional to 18,777.18, 25,913.75 and 10,819.91 is: 14,932.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.18 : 25,913.75 = 10,819.91 : x
  2. Step 2: Convert to fraction form
    18,777.18/25,913.75 = 10,819.91/x
  3. Step 3: Cross multiply
    18,777.18x = 25,913.75 × 10,819.91
  4. Step 4: Simplify right side
    18,777.18x = 280,384,442.76
  5. Step 5: Solve for x
    x = 280,384,442.76/18,777.18
  6. Step 6: Final answer
    x = 14,932.19

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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.