Home / 38,129.79-52,622.27-21,139.37

Finding the Fourth Proportional to 38,129.79, 52,622.27 and 21,139.37

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Solution

The fourth proportional to 38,129.79, 52,622.27 and 21,139.37 is: 29,174.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,129.79 : 52,622.27 = 21,139.37 : x
  2. Step 2: Convert to fraction form
    38,129.79/52,622.27 = 21,139.37/x
  3. Step 3: Cross multiply
    38,129.79x = 52,622.27 × 21,139.37
  4. Step 4: Simplify right side
    38,129.79x = 1,112,401,410.11
  5. Step 5: Solve for x
    x = 1,112,401,410.11/38,129.79
  6. Step 6: Final answer
    x = 29,174.07

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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.