Home / 28,073.85-38,695.75-19,900.19

Finding the Fourth Proportional to 28,073.85, 38,695.75 and 19,900.19

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Solution

The fourth proportional to 28,073.85, 38,695.75 and 19,900.19 is: 27,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073.85 : 38,695.75 = 19,900.19 : x
  2. Step 2: Convert to fraction form
    28,073.85/38,695.75 = 19,900.19/x
  3. Step 3: Cross multiply
    28,073.85x = 38,695.75 × 19,900.19
  4. Step 4: Simplify right side
    28,073.85x = 770,052,824.18
  5. Step 5: Solve for x
    x = 770,052,824.18/28,073.85
  6. Step 6: Final answer
    x = 27,429.54

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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.