Home / 38,118.30-52,601.72-21,122.79

Finding the Fourth Proportional to 38,118.30, 52,601.72 and 21,122.79

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Solution

The fourth proportional to 38,118.30, 52,601.72 and 21,122.79 is: 29,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,118.30 : 52,601.72 = 21,122.79 : x
  2. Step 2: Convert to fraction form
    38,118.30/52,601.72 = 21,122.79/x
  3. Step 3: Cross multiply
    38,118.30x = 52,601.72 × 21,122.79
  4. Step 4: Simplify right side
    38,118.30x = 1,111,094,979.58
  5. Step 5: Solve for x
    x = 1,111,094,979.58/38,118.30
  6. Step 6: Final answer
    x = 29,148.60

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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.