Home / 10,958.96-15,143.40-7,809.68

Finding the Fourth Proportional to 10,958.96, 15,143.40 and 7,809.68

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Solution

The fourth proportional to 10,958.96, 15,143.40 and 7,809.68 is: 10,791.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,958.96 : 15,143.40 = 7,809.68 : x
  2. Step 2: Convert to fraction form
    10,958.96/15,143.40 = 7,809.68/x
  3. Step 3: Cross multiply
    10,958.96x = 15,143.40 × 7,809.68
  4. Step 4: Simplify right side
    10,958.96x = 118,265,108.11
  5. Step 5: Solve for x
    x = 118,265,108.11/10,958.96
  6. Step 6: Final answer
    x = 10,791.64

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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.