Home / 28,552.88-39,402.12-15,806.60

Finding the Fourth Proportional to 28,552.88, 39,402.12 and 15,806.60

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Solution

The fourth proportional to 28,552.88, 39,402.12 and 15,806.60 is: 21,812.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,552.88 : 39,402.12 = 15,806.60 : x
  2. Step 2: Convert to fraction form
    28,552.88/39,402.12 = 15,806.60/x
  3. Step 3: Cross multiply
    28,552.88x = 39,402.12 × 15,806.60
  4. Step 4: Simplify right side
    28,552.88x = 622,813,549.99
  5. Step 5: Solve for x
    x = 622,813,549.99/28,552.88
  6. Step 6: Final answer
    x = 21,812.64

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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.