Home / 21,778.33-30,050.15-14,618.64

Finding the Fourth Proportional to 21,778.33, 30,050.15 and 14,618.64

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Solution

The fourth proportional to 21,778.33, 30,050.15 and 14,618.64 is: 20,171.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.33 : 30,050.15 = 14,618.64 : x
  2. Step 2: Convert to fraction form
    21,778.33/30,050.15 = 14,618.64/x
  3. Step 3: Cross multiply
    21,778.33x = 30,050.15 × 14,618.64
  4. Step 4: Simplify right side
    21,778.33x = 439,292,251.70
  5. Step 5: Solve for x
    x = 439,292,251.70/21,778.33
  6. Step 6: Final answer
    x = 20,171.08

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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.