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Finding the Fourth Proportional to 38,159.19, 52,659.65 and 21,392.19

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Solution

The fourth proportional to 38,159.19, 52,659.65 and 21,392.19 is: 29,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,159.19 : 52,659.65 = 21,392.19 : x
  2. Step 2: Convert to fraction form
    38,159.19/52,659.65 = 21,392.19/x
  3. Step 3: Cross multiply
    38,159.19x = 52,659.65 × 21,392.19
  4. Step 4: Simplify right side
    38,159.19x = 1,126,505,238.13
  5. Step 5: Solve for x
    x = 1,126,505,238.13/38,159.19
  6. Step 6: Final answer
    x = 29,521.20

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Half scale
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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.