Home / 39,218.84-54,117.69-22,221.80

Finding the Fourth Proportional to 39,218.84, 54,117.69 and 22,221.80

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Solution

The fourth proportional to 39,218.84, 54,117.69 and 22,221.80 is: 30,663.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,218.84 : 54,117.69 = 22,221.80 : x
  2. Step 2: Convert to fraction form
    39,218.84/54,117.69 = 22,221.80/x
  3. Step 3: Cross multiply
    39,218.84x = 54,117.69 × 22,221.80
  4. Step 4: Simplify right side
    39,218.84x = 1,202,592,483.64
  5. Step 5: Solve for x
    x = 1,202,592,483.64/39,218.84
  6. Step 6: Final answer
    x = 30,663.64

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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.