Home / 39,073.15-53,920.88-21,168.61

Finding the Fourth Proportional to 39,073.15, 53,920.88 and 21,168.61

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Solution

The fourth proportional to 39,073.15, 53,920.88 and 21,168.61 is: 29,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,073.15 : 53,920.88 = 21,168.61 : x
  2. Step 2: Convert to fraction form
    39,073.15/53,920.88 = 21,168.61/x
  3. Step 3: Cross multiply
    39,073.15x = 53,920.88 × 21,168.61
  4. Step 4: Simplify right side
    39,073.15x = 1,141,429,704.13
  5. Step 5: Solve for x
    x = 1,141,429,704.13/39,073.15
  6. Step 6: Final answer
    x = 29,212.64

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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.