Home / 38,928.12-53,720.81-21,023.13

Finding the Fourth Proportional to 38,928.12, 53,720.81 and 21,023.13

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Solution

The fourth proportional to 38,928.12, 53,720.81 and 21,023.13 is: 29,011.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,928.12 : 53,720.81 = 21,023.13 : x
  2. Step 2: Convert to fraction form
    38,928.12/53,720.81 = 21,023.13/x
  3. Step 3: Cross multiply
    38,928.12x = 53,720.81 × 21,023.13
  4. Step 4: Simplify right side
    38,928.12x = 1,129,379,467.22
  5. Step 5: Solve for x
    x = 1,129,379,467.22/38,928.12
  6. Step 6: Final answer
    x = 29,011.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.