Home / 10,877.85-15,015.63-6,401.79

Finding the Fourth Proportional to 10,877.85, 15,015.63 and 6,401.79

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Solution

The fourth proportional to 10,877.85, 15,015.63 and 6,401.79 is: 8,836.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,877.85 : 15,015.63 = 6,401.79 : x
  2. Step 2: Convert to fraction form
    10,877.85/15,015.63 = 6,401.79/x
  3. Step 3: Cross multiply
    10,877.85x = 15,015.63 × 6,401.79
  4. Step 4: Simplify right side
    10,877.85x = 96,126,909.98
  5. Step 5: Solve for x
    x = 96,126,909.98/10,877.85
  6. Step 6: Final answer
    x = 8,836.94

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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.