Home / 28,439.15-39,244.25-15,692.43

Finding the Fourth Proportional to 28,439.15, 39,244.25 and 15,692.43

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Solution

The fourth proportional to 28,439.15, 39,244.25 and 15,692.43 is: 21,654.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.15 : 39,244.25 = 15,692.43 : x
  2. Step 2: Convert to fraction form
    28,439.15/39,244.25 = 15,692.43/x
  3. Step 3: Cross multiply
    28,439.15x = 39,244.25 × 15,692.43
  4. Step 4: Simplify right side
    28,439.15x = 615,837,626.41
  5. Step 5: Solve for x
    x = 615,837,626.41/28,439.15
  6. Step 6: Final answer
    x = 21,654.58

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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.