Home / 28,522.73-39,362.05-15,776.78

Finding the Fourth Proportional to 28,522.73, 39,362.05 and 15,776.78

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Solution

The fourth proportional to 28,522.73, 39,362.05 and 15,776.78 is: 21,772.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,522.73 : 39,362.05 = 15,776.78 : x
  2. Step 2: Convert to fraction form
    28,522.73/39,362.05 = 15,776.78/x
  3. Step 3: Cross multiply
    28,522.73x = 39,362.05 × 15,776.78
  4. Step 4: Simplify right side
    28,522.73x = 621,006,226.11
  5. Step 5: Solve for x
    x = 621,006,226.11/28,522.73
  6. Step 6: Final answer
    x = 21,772.33

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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.