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Finding the Fourth Proportional to 13,407.54, 18,502.47 and 7,742.52

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Solution

The fourth proportional to 13,407.54, 18,502.47 and 7,742.52 is: 10,684.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.54 : 18,502.47 = 7,742.52 : x
  2. Step 2: Convert to fraction form
    13,407.54/18,502.47 = 7,742.52/x
  3. Step 3: Cross multiply
    13,407.54x = 18,502.47 × 7,742.52
  4. Step 4: Simplify right side
    13,407.54x = 143,255,744.02
  5. Step 5: Solve for x
    x = 143,255,744.02/13,407.54
  6. Step 6: Final answer
    x = 10,684.72

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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.