Home / 10,638.15-14,680.76-6,661.59

Finding the Fourth Proportional to 10,638.15, 14,680.76 and 6,661.59

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Solution

The fourth proportional to 10,638.15, 14,680.76 and 6,661.59 is: 9,193.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.15 : 14,680.76 = 6,661.59 : x
  2. Step 2: Convert to fraction form
    10,638.15/14,680.76 = 6,661.59/x
  3. Step 3: Cross multiply
    10,638.15x = 14,680.76 × 6,661.59
  4. Step 4: Simplify right side
    10,638.15x = 97,797,170.70
  5. Step 5: Solve for x
    x = 97,797,170.70/10,638.15
  6. Step 6: Final answer
    x = 9,193.06

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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.