Home / 13,521.08-18,658.88-7,552.80

Finding the Fourth Proportional to 13,521.08, 18,658.88 and 7,552.80

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Solution

The fourth proportional to 13,521.08, 18,658.88 and 7,552.80 is: 10,422.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.08 : 18,658.88 = 7,552.80 : x
  2. Step 2: Convert to fraction form
    13,521.08/18,658.88 = 7,552.80/x
  3. Step 3: Cross multiply
    13,521.08x = 18,658.88 × 7,552.80
  4. Step 4: Simplify right side
    13,521.08x = 140,926,788.86
  5. Step 5: Solve for x
    x = 140,926,788.86/13,521.08
  6. Step 6: Final answer
    x = 10,422.75

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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.