Home / 28,208.06-42,316.96-9,489.90

Finding the Fourth Proportional to 28,208.06, 42,316.96 and 9,489.90

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Solution

The fourth proportional to 28,208.06, 42,316.96 and 9,489.90 is: 14,236.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.06 : 42,316.96 = 9,489.90 : x
  2. Step 2: Convert to fraction form
    28,208.06/42,316.96 = 9,489.90/x
  3. Step 3: Cross multiply
    28,208.06x = 42,316.96 × 9,489.90
  4. Step 4: Simplify right side
    28,208.06x = 401,583,718.70
  5. Step 5: Solve for x
    x = 401,583,718.70/28,208.06
  6. Step 6: Final answer
    x = 14,236.49

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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.