Home / 20,952.74-28,913.99-11,521.22

Finding the Fourth Proportional to 20,952.74, 28,913.99 and 11,521.22

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Solution

The fourth proportional to 20,952.74, 28,913.99 and 11,521.22 is: 15,898.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.74 : 28,913.99 = 11,521.22 : x
  2. Step 2: Convert to fraction form
    20,952.74/28,913.99 = 11,521.22/x
  3. Step 3: Cross multiply
    20,952.74x = 28,913.99 × 11,521.22
  4. Step 4: Simplify right side
    20,952.74x = 333,124,439.87
  5. Step 5: Solve for x
    x = 333,124,439.87/20,952.74
  6. Step 6: Final answer
    x = 15,898.85

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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.