Home / 20,746.05-28,629.75-11,314.62

Finding the Fourth Proportional to 20,746.05, 28,629.75 and 11,314.62

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Solution

The fourth proportional to 20,746.05, 28,629.75 and 11,314.62 is: 15,614.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.05 : 28,629.75 = 11,314.62 : x
  2. Step 2: Convert to fraction form
    20,746.05/28,629.75 = 11,314.62/x
  3. Step 3: Cross multiply
    20,746.05x = 28,629.75 × 11,314.62
  4. Step 4: Simplify right side
    20,746.05x = 323,934,741.95
  5. Step 5: Solve for x
    x = 323,934,741.95/20,746.05
  6. Step 6: Final answer
    x = 15,614.29

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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.