Home / 13,440.24-20,159.64-3,580.20

Finding the Fourth Proportional to 13,440.24, 20,159.64 and 3,580.20

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Solution

The fourth proportional to 13,440.24, 20,159.64 and 3,580.20 is: 5,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.24 : 20,159.64 = 3,580.20 : x
  2. Step 2: Convert to fraction form
    13,440.24/20,159.64 = 3,580.20/x
  3. Step 3: Cross multiply
    13,440.24x = 20,159.64 × 3,580.20
  4. Step 4: Simplify right side
    13,440.24x = 72,175,543.13
  5. Step 5: Solve for x
    x = 72,175,543.13/13,440.24
  6. Step 6: Final answer
    x = 5,370.11

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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.