Home / 12,521.95-17,280.20-7,216.65

Finding the Fourth Proportional to 12,521.95, 17,280.20 and 7,216.65

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Solution

The fourth proportional to 12,521.95, 17,280.20 and 7,216.65 is: 9,958.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.95 : 17,280.20 = 7,216.65 : x
  2. Step 2: Convert to fraction form
    12,521.95/17,280.20 = 7,216.65/x
  3. Step 3: Cross multiply
    12,521.95x = 17,280.20 × 7,216.65
  4. Step 4: Simplify right side
    12,521.95x = 124,705,173.37
  5. Step 5: Solve for x
    x = 124,705,173.37/12,521.95
  6. Step 6: Final answer
    x = 9,958.93

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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.