Home / 20,521.93-28,320.51-11,569.44

Finding the Fourth Proportional to 20,521.93, 28,320.51 and 11,569.44

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Solution

The fourth proportional to 20,521.93, 28,320.51 and 11,569.44 is: 15,965.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.93 : 28,320.51 = 11,569.44 : x
  2. Step 2: Convert to fraction form
    20,521.93/28,320.51 = 11,569.44/x
  3. Step 3: Cross multiply
    20,521.93x = 28,320.51 × 11,569.44
  4. Step 4: Simplify right side
    20,521.93x = 327,652,441.21
  5. Step 5: Solve for x
    x = 327,652,441.21/20,521.93
  6. Step 6: Final answer
    x = 15,965.97

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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.