Home / 28,348.39-39,120.78-16,412.35

Finding the Fourth Proportional to 28,348.39, 39,120.78 and 16,412.35

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Solution

The fourth proportional to 28,348.39, 39,120.78 and 16,412.35 is: 22,649.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348.39 : 39,120.78 = 16,412.35 : x
  2. Step 2: Convert to fraction form
    28,348.39/39,120.78 = 16,412.35/x
  3. Step 3: Cross multiply
    28,348.39x = 39,120.78 × 16,412.35
  4. Step 4: Simplify right side
    28,348.39x = 642,063,933.63
  5. Step 5: Solve for x
    x = 642,063,933.63/28,348.39
  6. Step 6: Final answer
    x = 22,649.04

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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.