Home / 28,589.22-39,455.51-15,845.49

Finding the Fourth Proportional to 28,589.22, 39,455.51 and 15,845.49

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Solution

The fourth proportional to 28,589.22, 39,455.51 and 15,845.49 is: 21,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,589.22 : 39,455.51 = 15,845.49 : x
  2. Step 2: Convert to fraction form
    28,589.22/39,455.51 = 15,845.49/x
  3. Step 3: Cross multiply
    28,589.22x = 39,455.51 × 15,845.49
  4. Step 4: Simplify right side
    28,589.22x = 625,191,809.92
  5. Step 5: Solve for x
    x = 625,191,809.92/28,589.22
  6. Step 6: Final answer
    x = 21,868.10

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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.