Home / 13,343.52-18,403.56-12,449.28

Finding the Fourth Proportional to 13,343.52, 18,403.56 and 12,449.28

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Solution

The fourth proportional to 13,343.52, 18,403.56 and 12,449.28 is: 17,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,343.52 : 18,403.56 = 12,449.28 : x
  2. Step 2: Convert to fraction form
    13,343.52/18,403.56 = 12,449.28/x
  3. Step 3: Cross multiply
    13,343.52x = 18,403.56 × 12,449.28
  4. Step 4: Simplify right side
    13,343.52x = 229,111,071.44
  5. Step 5: Solve for x
    x = 229,111,071.44/13,343.52
  6. Step 6: Final answer
    x = 17,170.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.