Home / 28,191.54-38,902.68-15,442.19

Finding the Fourth Proportional to 28,191.54, 38,902.68 and 15,442.19

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Solution

The fourth proportional to 28,191.54, 38,902.68 and 15,442.19 is: 21,309.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.54 : 38,902.68 = 15,442.19 : x
  2. Step 2: Convert to fraction form
    28,191.54/38,902.68 = 15,442.19/x
  3. Step 3: Cross multiply
    28,191.54x = 38,902.68 × 15,442.19
  4. Step 4: Simplify right side
    28,191.54x = 600,742,746.27
  5. Step 5: Solve for x
    x = 600,742,746.27/28,191.54
  6. Step 6: Final answer
    x = 21,309.32

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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.