Home / 12,518.01-17,278.70-7,216.36

Finding the Fourth Proportional to 12,518.01, 17,278.70 and 7,216.36

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Solution

The fourth proportional to 12,518.01, 17,278.70 and 7,216.36 is: 9,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.01 : 17,278.70 = 7,216.36 : x
  2. Step 2: Convert to fraction form
    12,518.01/17,278.70 = 7,216.36/x
  3. Step 3: Cross multiply
    12,518.01x = 17,278.70 × 7,216.36
  4. Step 4: Simplify right side
    12,518.01x = 124,689,240.25
  5. Step 5: Solve for x
    x = 124,689,240.25/12,518.01
  6. Step 6: Final answer
    x = 9,960.79

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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.