Home / 28,448.40-39,250.88-18,377.28

Finding the Fourth Proportional to 28,448.40, 39,250.88 and 18,377.28

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Solution

The fourth proportional to 28,448.40, 39,250.88 and 18,377.28 is: 25,355.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,448.40 : 39,250.88 = 18,377.28 : x
  2. Step 2: Convert to fraction form
    28,448.40/39,250.88 = 18,377.28/x
  3. Step 3: Cross multiply
    28,448.40x = 39,250.88 × 18,377.28
  4. Step 4: Simplify right side
    28,448.40x = 721,324,412.01
  5. Step 5: Solve for x
    x = 721,324,412.01/28,448.40
  6. Step 6: Final answer
    x = 25,355.54

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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.