Home / 38,900.76-58,313.21-21,115.32

Finding the Fourth Proportional to 38,900.76, 58,313.21 and 21,115.32

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Solution

The fourth proportional to 38,900.76, 58,313.21 and 21,115.32 is: 31,652.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,900.76 : 58,313.21 = 21,115.32 : x
  2. Step 2: Convert to fraction form
    38,900.76/58,313.21 = 21,115.32/x
  3. Step 3: Cross multiply
    38,900.76x = 58,313.21 × 21,115.32
  4. Step 4: Simplify right side
    38,900.76x = 1,231,301,983.80
  5. Step 5: Solve for x
    x = 1,231,301,983.80/38,900.76
  6. Step 6: Final answer
    x = 31,652.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.