Home / 14,920.29-20,588.40-8,631.49

Finding the Fourth Proportional to 14,920.29, 20,588.40 and 8,631.49

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Solution

The fourth proportional to 14,920.29, 20,588.40 and 8,631.49 is: 11,910.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.29 : 20,588.40 = 8,631.49 : x
  2. Step 2: Convert to fraction form
    14,920.29/20,588.40 = 8,631.49/x
  3. Step 3: Cross multiply
    14,920.29x = 20,588.40 × 8,631.49
  4. Step 4: Simplify right side
    14,920.29x = 177,708,568.72
  5. Step 5: Solve for x
    x = 177,708,568.72/14,920.29
  6. Step 6: Final answer
    x = 11,910.53

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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.