Home / 28,522.33-39,360.12-15,775.18

Finding the Fourth Proportional to 28,522.33, 39,360.12 and 15,775.18

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Solution

The fourth proportional to 28,522.33, 39,360.12 and 15,775.18 is: 21,769.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,522.33 : 39,360.12 = 15,775.18 : x
  2. Step 2: Convert to fraction form
    28,522.33/39,360.12 = 15,775.18/x
  3. Step 3: Cross multiply
    28,522.33x = 39,360.12 × 15,775.18
  4. Step 4: Simplify right side
    28,522.33x = 620,912,977.82
  5. Step 5: Solve for x
    x = 620,912,977.82/28,522.33
  6. Step 6: Final answer
    x = 21,769.36

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Double scale
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Similar ratio
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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.