Home / 33,638.39-46,417.48-20,715.61

Finding the Fourth Proportional to 33,638.39, 46,417.48 and 20,715.61

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Solution

The fourth proportional to 33,638.39, 46,417.48 and 20,715.61 is: 28,585.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,638.39 : 46,417.48 = 20,715.61 : x
  2. Step 2: Convert to fraction form
    33,638.39/46,417.48 = 20,715.61/x
  3. Step 3: Cross multiply
    33,638.39x = 46,417.48 × 20,715.61
  4. Step 4: Simplify right side
    33,638.39x = 961,566,412.86
  5. Step 5: Solve for x
    x = 961,566,412.86/33,638.39
  6. Step 6: Final answer
    x = 28,585.39

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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.