Home / 39,221.40-54,125.88-21,316.44

Finding the Fourth Proportional to 39,221.40, 54,125.88 and 21,316.44

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Solution

The fourth proportional to 39,221.40, 54,125.88 and 21,316.44 is: 29,416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.40 : 54,125.88 = 21,316.44 : x
  2. Step 2: Convert to fraction form
    39,221.40/54,125.88 = 21,316.44/x
  3. Step 3: Cross multiply
    39,221.40x = 54,125.88 × 21,316.44
  4. Step 4: Simplify right side
    39,221.40x = 1,153,771,208.78
  5. Step 5: Solve for x
    x = 1,153,771,208.78/39,221.40
  6. Step 6: Final answer
    x = 29,416.88

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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.