Home / 28,028.40-42,047.46-9,309.30

Finding the Fourth Proportional to 28,028.40, 42,047.46 and 9,309.30

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Solution

The fourth proportional to 28,028.40, 42,047.46 and 9,309.30 is: 13,965.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.40 : 42,047.46 = 9,309.30 : x
  2. Step 2: Convert to fraction form
    28,028.40/42,047.46 = 9,309.30/x
  3. Step 3: Cross multiply
    28,028.40x = 42,047.46 × 9,309.30
  4. Step 4: Simplify right side
    28,028.40x = 391,432,419.38
  5. Step 5: Solve for x
    x = 391,432,419.38/28,028.40
  6. Step 6: Final answer
    x = 13,965.56

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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.