Home / 20,656.93-28,505.64-11,703.91

Finding the Fourth Proportional to 20,656.93, 28,505.64 and 11,703.91

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Solution

The fourth proportional to 20,656.93, 28,505.64 and 11,703.91 is: 16,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.93 : 28,505.64 = 11,703.91 : x
  2. Step 2: Convert to fraction form
    20,656.93/28,505.64 = 11,703.91/x
  3. Step 3: Cross multiply
    20,656.93x = 28,505.64 × 11,703.91
  4. Step 4: Simplify right side
    20,656.93x = 333,627,445.05
  5. Step 5: Solve for x
    x = 333,627,445.05/20,656.93
  6. Step 6: Final answer
    x = 16,150.87

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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.