Home / 20,866.34-28,796.04-11,434.94

Finding the Fourth Proportional to 20,866.34, 28,796.04 and 11,434.94

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Solution

The fourth proportional to 20,866.34, 28,796.04 and 11,434.94 is: 15,780.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.34 : 28,796.04 = 11,434.94 : x
  2. Step 2: Convert to fraction form
    20,866.34/28,796.04 = 11,434.94/x
  3. Step 3: Cross multiply
    20,866.34x = 28,796.04 × 11,434.94
  4. Step 4: Simplify right side
    20,866.34x = 329,280,989.64
  5. Step 5: Solve for x
    x = 329,280,989.64/20,866.34
  6. Step 6: Final answer
    x = 15,780.49

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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.