Home / 13,148.47-19,691.34-7,290.55

Finding the Fourth Proportional to 13,148.47, 19,691.34 and 7,290.55

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Solution

The fourth proportional to 13,148.47, 19,691.34 and 7,290.55 is: 10,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.47 : 19,691.34 = 7,290.55 : x
  2. Step 2: Convert to fraction form
    13,148.47/19,691.34 = 7,290.55/x
  3. Step 3: Cross multiply
    13,148.47x = 19,691.34 × 7,290.55
  4. Step 4: Simplify right side
    13,148.47x = 143,560,698.84
  5. Step 5: Solve for x
    x = 143,560,698.84/13,148.47
  6. Step 6: Final answer
    x = 10,918.43

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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.