Home / 13,020.66-19,512.29-7,402.79

Finding the Fourth Proportional to 13,020.66, 19,512.29 and 7,402.79

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Solution

The fourth proportional to 13,020.66, 19,512.29 and 7,402.79 is: 11,093.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.66 : 19,512.29 = 7,402.79 : x
  2. Step 2: Convert to fraction form
    13,020.66/19,512.29 = 7,402.79/x
  3. Step 3: Cross multiply
    13,020.66x = 19,512.29 × 7,402.79
  4. Step 4: Simplify right side
    13,020.66x = 144,445,452.58
  5. Step 5: Solve for x
    x = 144,445,452.58/13,020.66
  6. Step 6: Final answer
    x = 11,093.56

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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.