Home / 20,905.26-28,849.18-11,345.19

Finding the Fourth Proportional to 20,905.26, 28,849.18 and 11,345.19

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Solution

The fourth proportional to 20,905.26, 28,849.18 and 11,345.19 is: 15,656.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.26 : 28,849.18 = 11,345.19 : x
  2. Step 2: Convert to fraction form
    20,905.26/28,849.18 = 11,345.19/x
  3. Step 3: Cross multiply
    20,905.26x = 28,849.18 × 11,345.19
  4. Step 4: Simplify right side
    20,905.26x = 327,299,428.44
  5. Step 5: Solve for x
    x = 327,299,428.44/20,905.26
  6. Step 6: Final answer
    x = 15,656.32

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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.