Home / 10,086.30-15,112.08-7,869.51

Finding the Fourth Proportional to 10,086.30, 15,112.08 and 7,869.51

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Solution

The fourth proportional to 10,086.30, 15,112.08 and 7,869.51 is: 11,790.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,086.30 : 15,112.08 = 7,869.51 : x
  2. Step 2: Convert to fraction form
    10,086.30/15,112.08 = 7,869.51/x
  3. Step 3: Cross multiply
    10,086.30x = 15,112.08 × 7,869.51
  4. Step 4: Simplify right side
    10,086.30x = 118,924,664.68
  5. Step 5: Solve for x
    x = 118,924,664.68/10,086.30
  6. Step 6: Final answer
    x = 11,790.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.