Home / 28,427.25-42,650.71-9,720.45

Finding the Fourth Proportional to 28,427.25, 42,650.71 and 9,720.45

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Solution

The fourth proportional to 28,427.25, 42,650.71 and 9,720.45 is: 14,584.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.25 : 42,650.71 = 9,720.45 : x
  2. Step 2: Convert to fraction form
    28,427.25/42,650.71 = 9,720.45/x
  3. Step 3: Cross multiply
    28,427.25x = 42,650.71 × 9,720.45
  4. Step 4: Simplify right side
    28,427.25x = 414,584,176.35
  5. Step 5: Solve for x
    x = 414,584,176.35/28,427.25
  6. Step 6: Final answer
    x = 14,584.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.