Home / 28,028.14-42,045.29-13,991.69

Finding the Fourth Proportional to 28,028.14, 42,045.29 and 13,991.69

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Solution

The fourth proportional to 28,028.14, 42,045.29 and 13,991.69 is: 20,989.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.14 : 42,045.29 = 13,991.69 : x
  2. Step 2: Convert to fraction form
    28,028.14/42,045.29 = 13,991.69/x
  3. Step 3: Cross multiply
    28,028.14x = 42,045.29 × 13,991.69
  4. Step 4: Simplify right side
    28,028.14x = 588,284,663.64
  5. Step 5: Solve for x
    x = 588,284,663.64/28,028.14
  6. Step 6: Final answer
    x = 20,989.07

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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.