Home / 13,546.85-20,319.80-4,781.57

Finding the Fourth Proportional to 13,546.85, 20,319.80 and 4,781.57

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Solution

The fourth proportional to 13,546.85, 20,319.80 and 4,781.57 is: 7,172.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,546.85 : 20,319.80 = 4,781.57 : x
  2. Step 2: Convert to fraction form
    13,546.85/20,319.80 = 4,781.57/x
  3. Step 3: Cross multiply
    13,546.85x = 20,319.80 × 4,781.57
  4. Step 4: Simplify right side
    13,546.85x = 97,160,420.58
  5. Step 5: Solve for x
    x = 97,160,420.58/13,546.85
  6. Step 6: Final answer
    x = 7,172.18

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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.