Home / 10,887.96-15,011.28-7,052.78

Finding the Fourth Proportional to 10,887.96, 15,011.28 and 7,052.78

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Solution

The fourth proportional to 10,887.96, 15,011.28 and 7,052.78 is: 9,723.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.96 : 15,011.28 = 7,052.78 : x
  2. Step 2: Convert to fraction form
    10,887.96/15,011.28 = 7,052.78/x
  3. Step 3: Cross multiply
    10,887.96x = 15,011.28 × 7,052.78
  4. Step 4: Simplify right side
    10,887.96x = 105,871,180.30
  5. Step 5: Solve for x
    x = 105,871,180.30/10,887.96
  6. Step 6: Final answer
    x = 9,723.69

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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.