Home / 20,922.48-28,872.99-11,362.32

Finding the Fourth Proportional to 20,922.48, 28,872.99 and 11,362.32

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Solution

The fourth proportional to 20,922.48, 28,872.99 and 11,362.32 is: 15,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.48 : 28,872.99 = 11,362.32 : x
  2. Step 2: Convert to fraction form
    20,922.48/28,872.99 = 11,362.32/x
  3. Step 3: Cross multiply
    20,922.48x = 28,872.99 × 11,362.32
  4. Step 4: Simplify right side
    20,922.48x = 328,064,151.74
  5. Step 5: Solve for x
    x = 328,064,151.74/20,922.48
  6. Step 6: Final answer
    x = 15,679.98

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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.