Home / 13,705.59-20,541.96-8,432.18

Finding the Fourth Proportional to 13,705.59, 20,541.96 and 8,432.18

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Solution

The fourth proportional to 13,705.59, 20,541.96 and 8,432.18 is: 12,638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.59 : 20,541.96 = 8,432.18 : x
  2. Step 2: Convert to fraction form
    13,705.59/20,541.96 = 8,432.18/x
  3. Step 3: Cross multiply
    13,705.59x = 20,541.96 × 8,432.18
  4. Step 4: Simplify right side
    13,705.59x = 173,213,401.56
  5. Step 5: Solve for x
    x = 173,213,401.56/13,705.59
  6. Step 6: Final answer
    x = 12,638.16

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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.