Home / 13,680.86-20,522.10-4,321.18

Finding the Fourth Proportional to 13,680.86, 20,522.10 and 4,321.18

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Solution

The fourth proportional to 13,680.86, 20,522.10 and 4,321.18 is: 6,482.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.86 : 20,522.10 = 4,321.18 : x
  2. Step 2: Convert to fraction form
    13,680.86/20,522.10 = 4,321.18/x
  3. Step 3: Cross multiply
    13,680.86x = 20,522.10 × 4,321.18
  4. Step 4: Simplify right side
    13,680.86x = 88,679,688.08
  5. Step 5: Solve for x
    x = 88,679,688.08/13,680.86
  6. Step 6: Final answer
    x = 6,482.03

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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.