Home / 28,121.06-38,805.54-15,545

Finding the Fourth Proportional to 28,121.06, 38,805.54 and 15,545

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Solution

The fourth proportional to 28,121.06, 38,805.54 and 15,545 is: 21,451.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.06 : 38,805.54 = 15,545 : x
  2. Step 2: Convert to fraction form
    28,121.06/38,805.54 = 15,545/x
  3. Step 3: Cross multiply
    28,121.06x = 38,805.54 × 15,545
  4. Step 4: Simplify right side
    28,121.06x = 603,232,119.30
  5. Step 5: Solve for x
    x = 603,232,119.30/28,121.06
  6. Step 6: Final answer
    x = 21,451.26

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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.