Home / 20,551.42-28,358.10-11,476.89

Finding the Fourth Proportional to 20,551.42, 28,358.10 and 11,476.89

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Solution

The fourth proportional to 20,551.42, 28,358.10 and 11,476.89 is: 15,836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.42 : 28,358.10 = 11,476.89 : x
  2. Step 2: Convert to fraction form
    20,551.42/28,358.10 = 11,476.89/x
  3. Step 3: Cross multiply
    20,551.42x = 28,358.10 × 11,476.89
  4. Step 4: Simplify right side
    20,551.42x = 325,462,794.31
  5. Step 5: Solve for x
    x = 325,462,794.31/20,551.42
  6. Step 6: Final answer
    x = 15,836.51

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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.