Home / 12,521.23-17,280.14-7,216.39

Finding the Fourth Proportional to 12,521.23, 17,280.14 and 7,216.39

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Solution

The fourth proportional to 12,521.23, 17,280.14 and 7,216.39 is: 9,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.23 : 17,280.14 = 7,216.39 : x
  2. Step 2: Convert to fraction form
    12,521.23/17,280.14 = 7,216.39/x
  3. Step 3: Cross multiply
    12,521.23x = 17,280.14 × 7,216.39
  4. Step 4: Simplify right side
    12,521.23x = 124,700,229.49
  5. Step 5: Solve for x
    x = 124,700,229.49/12,521.23
  6. Step 6: Final answer
    x = 9,959.10

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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.