Home / 10,885.36-15,021.76-6,170.56

Finding the Fourth Proportional to 10,885.36, 15,021.76 and 6,170.56

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Solution

The fourth proportional to 10,885.36, 15,021.76 and 6,170.56 is: 8,515.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.36 : 15,021.76 = 6,170.56 : x
  2. Step 2: Convert to fraction form
    10,885.36/15,021.76 = 6,170.56/x
  3. Step 3: Cross multiply
    10,885.36x = 15,021.76 × 6,170.56
  4. Step 4: Simplify right side
    10,885.36x = 92,692,671.39
  5. Step 5: Solve for x
    x = 92,692,671.39/10,885.36
  6. Step 6: Final answer
    x = 8,515.35

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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.