Home / 21,221.76-29,298.24-14,171.52

Finding the Fourth Proportional to 21,221.76, 29,298.24 and 14,171.52

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Solution

The fourth proportional to 21,221.76, 29,298.24 and 14,171.52 is: 19,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221.76 : 29,298.24 = 14,171.52 : x
  2. Step 2: Convert to fraction form
    21,221.76/29,298.24 = 14,171.52/x
  3. Step 3: Cross multiply
    21,221.76x = 29,298.24 × 14,171.52
  4. Step 4: Simplify right side
    21,221.76x = 415,200,594.12
  5. Step 5: Solve for x
    x = 415,200,594.12/21,221.76
  6. Step 6: Final answer
    x = 19,564.85

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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.