Home / 20,833.92-28,751.40-11,402.28

Finding the Fourth Proportional to 20,833.92, 28,751.40 and 11,402.28

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Solution

The fourth proportional to 20,833.92, 28,751.40 and 11,402.28 is: 15,735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.92 : 28,751.40 = 11,402.28 : x
  2. Step 2: Convert to fraction form
    20,833.92/28,751.40 = 11,402.28/x
  3. Step 3: Cross multiply
    20,833.92x = 28,751.40 × 11,402.28
  4. Step 4: Simplify right side
    20,833.92x = 327,831,513.19
  5. Step 5: Solve for x
    x = 327,831,513.19/20,833.92
  6. Step 6: Final answer
    x = 15,735.47

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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.