Home / 38,930.29-53,723.78-21,025.30

Finding the Fourth Proportional to 38,930.29, 53,723.78 and 21,025.30

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Solution

The fourth proportional to 38,930.29, 53,723.78 and 21,025.30 is: 29,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,930.29 : 53,723.78 = 21,025.30 : x
  2. Step 2: Convert to fraction form
    38,930.29/53,723.78 = 21,025.30/x
  3. Step 3: Cross multiply
    38,930.29x = 53,723.78 × 21,025.30
  4. Step 4: Simplify right side
    38,930.29x = 1,129,558,323.02
  5. Step 5: Solve for x
    x = 1,129,558,323.02/38,930.29
  6. Step 6: Final answer
    x = 29,014.90

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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.