Home / 38,217.77-52,739.51-21,221.57

Finding the Fourth Proportional to 38,217.77, 52,739.51 and 21,221.57

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Solution

The fourth proportional to 38,217.77, 52,739.51 and 21,221.57 is: 29,285.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,217.77 : 52,739.51 = 21,221.57 : x
  2. Step 2: Convert to fraction form
    38,217.77/52,739.51 = 21,221.57/x
  3. Step 3: Cross multiply
    38,217.77x = 52,739.51 × 21,221.57
  4. Step 4: Simplify right side
    38,217.77x = 1,119,215,308.55
  5. Step 5: Solve for x
    x = 1,119,215,308.55/38,217.77
  6. Step 6: Final answer
    x = 29,285.21

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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.