Home / 18,385.47-25,364.55-10,819.80

Finding the Fourth Proportional to 18,385.47, 25,364.55 and 10,819.80

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Solution

The fourth proportional to 18,385.47, 25,364.55 and 10,819.80 is: 14,926.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.47 : 25,364.55 = 10,819.80 : x
  2. Step 2: Convert to fraction form
    18,385.47/25,364.55 = 10,819.80/x
  3. Step 3: Cross multiply
    18,385.47x = 25,364.55 × 10,819.80
  4. Step 4: Simplify right side
    18,385.47x = 274,439,358.09
  5. Step 5: Solve for x
    x = 274,439,358.09/18,385.47
  6. Step 6: Final answer
    x = 14,926.97

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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.