Home / 28,695.12-39,599.12-16,119.84

Finding the Fourth Proportional to 28,695.12, 39,599.12 and 16,119.84

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Solution

The fourth proportional to 28,695.12, 39,599.12 and 16,119.84 is: 22,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,695.12 : 39,599.12 = 16,119.84 : x
  2. Step 2: Convert to fraction form
    28,695.12/39,599.12 = 16,119.84/x
  3. Step 3: Cross multiply
    28,695.12x = 39,599.12 × 16,119.84
  4. Step 4: Simplify right side
    28,695.12x = 638,331,478.54
  5. Step 5: Solve for x
    x = 638,331,478.54/28,695.12
  6. Step 6: Final answer
    x = 22,245.30

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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.