Home / 38,406.75-53,002.13-21,639.75

Finding the Fourth Proportional to 38,406.75, 53,002.13 and 21,639.75

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Solution

The fourth proportional to 38,406.75, 53,002.13 and 21,639.75 is: 29,863.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,406.75 : 53,002.13 = 21,639.75 : x
  2. Step 2: Convert to fraction form
    38,406.75/53,002.13 = 21,639.75/x
  3. Step 3: Cross multiply
    38,406.75x = 53,002.13 × 21,639.75
  4. Step 4: Simplify right side
    38,406.75x = 1,146,952,734.47
  5. Step 5: Solve for x
    x = 1,146,952,734.47/38,406.75
  6. Step 6: Final answer
    x = 29,863.31

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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.