Home / 12,521.59-18,781.74-4,201.67

Finding the Fourth Proportional to 12,521.59, 18,781.74 and 4,201.67

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Solution

The fourth proportional to 12,521.59, 18,781.74 and 4,201.67 is: 6,302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.59 : 18,781.74 = 4,201.67 : x
  2. Step 2: Convert to fraction form
    12,521.59/18,781.74 = 4,201.67/x
  3. Step 3: Cross multiply
    12,521.59x = 18,781.74 × 4,201.67
  4. Step 4: Simplify right side
    12,521.59x = 78,914,720.46
  5. Step 5: Solve for x
    x = 78,914,720.46/12,521.59
  6. Step 6: Final answer
    x = 6,302.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.