Home / 12,515.10-17,272.67-7,208.88

Finding the Fourth Proportional to 12,515.10, 17,272.67 and 7,208.88

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Solution

The fourth proportional to 12,515.10, 17,272.67 and 7,208.88 is: 9,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.10 : 17,272.67 = 7,208.88 : x
  2. Step 2: Convert to fraction form
    12,515.10/17,272.67 = 7,208.88/x
  3. Step 3: Cross multiply
    12,515.10x = 17,272.67 × 7,208.88
  4. Step 4: Simplify right side
    12,515.10x = 124,516,569.27
  5. Step 5: Solve for x
    x = 124,516,569.27/12,515.10
  6. Step 6: Final answer
    x = 9,949.31

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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.