Home / 13,148.88-19,729.80-9,278.16

Finding the Fourth Proportional to 13,148.88, 19,729.80 and 9,278.16

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Solution

The fourth proportional to 13,148.88, 19,729.80 and 9,278.16 is: 13,921.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.88 : 19,729.80 = 9,278.16 : x
  2. Step 2: Convert to fraction form
    13,148.88/19,729.80 = 9,278.16/x
  3. Step 3: Cross multiply
    13,148.88x = 19,729.80 × 9,278.16
  4. Step 4: Simplify right side
    13,148.88x = 183,056,241.17
  5. Step 5: Solve for x
    x = 183,056,241.17/13,148.88
  6. Step 6: Final answer
    x = 13,921.81

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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.