Home / 10,875.96-15,011.64-6,687.72

Finding the Fourth Proportional to 10,875.96, 15,011.64 and 6,687.72

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Solution

The fourth proportional to 10,875.96, 15,011.64 and 6,687.72 is: 9,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,875.96 : 15,011.64 = 6,687.72 : x
  2. Step 2: Convert to fraction form
    10,875.96/15,011.64 = 6,687.72/x
  3. Step 3: Cross multiply
    10,875.96x = 15,011.64 × 6,687.72
  4. Step 4: Simplify right side
    10,875.96x = 100,393,645.06
  5. Step 5: Solve for x
    x = 100,393,645.06/10,875.96
  6. Step 6: Final answer
    x = 9,230.78

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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.