Home / 18,780.60-25,917.31-10,283.51

Finding the Fourth Proportional to 18,780.60, 25,917.31 and 10,283.51

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Solution

The fourth proportional to 18,780.60, 25,917.31 and 10,283.51 is: 14,191.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.60 : 25,917.31 = 10,283.51 : x
  2. Step 2: Convert to fraction form
    18,780.60/25,917.31 = 10,283.51/x
  3. Step 3: Cross multiply
    18,780.60x = 25,917.31 × 10,283.51
  4. Step 4: Simplify right side
    18,780.60x = 266,520,865.14
  5. Step 5: Solve for x
    x = 266,520,865.14/18,780.60
  6. Step 6: Final answer
    x = 14,191.29

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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.