Home / 38,118.78-52,598.94-21,122.21

Finding the Fourth Proportional to 38,118.78, 52,598.94 and 21,122.21

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Solution

The fourth proportional to 38,118.78, 52,598.94 and 21,122.21 is: 29,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,118.78 : 52,598.94 = 21,122.21 : x
  2. Step 2: Convert to fraction form
    38,118.78/52,598.94 = 21,122.21/x
  3. Step 3: Cross multiply
    38,118.78x = 52,598.94 × 21,122.21
  4. Step 4: Simplify right side
    38,118.78x = 1,111,005,717.13
  5. Step 5: Solve for x
    x = 1,111,005,717.13/38,118.78
  6. Step 6: Final answer
    x = 29,145.89

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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.