Home / 20,416.55-28,175.51-11,465.64

Finding the Fourth Proportional to 20,416.55, 28,175.51 and 11,465.64

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Solution

The fourth proportional to 20,416.55, 28,175.51 and 11,465.64 is: 15,822.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.55 : 28,175.51 = 11,465.64 : x
  2. Step 2: Convert to fraction form
    20,416.55/28,175.51 = 11,465.64/x
  3. Step 3: Cross multiply
    20,416.55x = 28,175.51 × 11,465.64
  4. Step 4: Simplify right side
    20,416.55x = 323,050,283.14
  5. Step 5: Solve for x
    x = 323,050,283.14/20,416.55
  6. Step 6: Final answer
    x = 15,822.97

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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.