Home / 28,155.22-38,855.01-15,581.14

Finding the Fourth Proportional to 28,155.22, 38,855.01 and 15,581.14

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Solution

The fourth proportional to 28,155.22, 38,855.01 and 15,581.14 is: 21,502.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.22 : 38,855.01 = 15,581.14 : x
  2. Step 2: Convert to fraction form
    28,155.22/38,855.01 = 15,581.14/x
  3. Step 3: Cross multiply
    28,155.22x = 38,855.01 × 15,581.14
  4. Step 4: Simplify right side
    28,155.22x = 605,405,350.51
  5. Step 5: Solve for x
    x = 605,405,350.51/28,155.22
  6. Step 6: Final answer
    x = 21,502.42

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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.