Home / 13,580.56-20,397.72-8,254.72

Finding the Fourth Proportional to 13,580.56, 20,397.72 and 8,254.72

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Solution

The fourth proportional to 13,580.56, 20,397.72 and 8,254.72 is: 12,398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.56 : 20,397.72 = 8,254.72 : x
  2. Step 2: Convert to fraction form
    13,580.56/20,397.72 = 8,254.72/x
  3. Step 3: Cross multiply
    13,580.56x = 20,397.72 × 8,254.72
  4. Step 4: Simplify right side
    13,580.56x = 168,377,467.24
  5. Step 5: Solve for x
    x = 168,377,467.24/13,580.56
  6. Step 6: Final answer
    x = 12,398.42

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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.