Home / 12,519.39-17,278.80-7,213.29

Finding the Fourth Proportional to 12,519.39, 17,278.80 and 7,213.29

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Solution

The fourth proportional to 12,519.39, 17,278.80 and 7,213.29 is: 9,955.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.39 : 17,278.80 = 7,213.29 : x
  2. Step 2: Convert to fraction form
    12,519.39/17,278.80 = 7,213.29/x
  3. Step 3: Cross multiply
    12,519.39x = 17,278.80 × 7,213.29
  4. Step 4: Simplify right side
    12,519.39x = 124,636,995.25
  5. Step 5: Solve for x
    x = 124,636,995.25/12,519.39
  6. Step 6: Final answer
    x = 9,955.52

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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.