Home / 38,134.12-52,623.28-21,137.28

Finding the Fourth Proportional to 38,134.12, 52,623.28 and 21,137.28

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Solution

The fourth proportional to 38,134.12, 52,623.28 and 21,137.28 is: 29,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,134.12 : 52,623.28 = 21,137.28 : x
  2. Step 2: Convert to fraction form
    38,134.12/52,623.28 = 21,137.28/x
  3. Step 3: Cross multiply
    38,134.12x = 52,623.28 × 21,137.28
  4. Step 4: Simplify right side
    38,134.12x = 1,112,313,003.88
  5. Step 5: Solve for x
    x = 1,112,313,003.88/38,134.12
  6. Step 6: Final answer
    x = 29,168.45

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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.