Home / 10,892.01-15,028.68-7,120.70

Finding the Fourth Proportional to 10,892.01, 15,028.68 and 7,120.70

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Solution

The fourth proportional to 10,892.01, 15,028.68 and 7,120.70 is: 9,825.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,892.01 : 15,028.68 = 7,120.70 : x
  2. Step 2: Convert to fraction form
    10,892.01/15,028.68 = 7,120.70/x
  3. Step 3: Cross multiply
    10,892.01x = 15,028.68 × 7,120.70
  4. Step 4: Simplify right side
    10,892.01x = 107,014,721.68
  5. Step 5: Solve for x
    x = 107,014,721.68/10,892.01
  6. Step 6: Final answer
    x = 9,825.07

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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.