Home / 28,328.14-39,091.17-16,390.63

Finding the Fourth Proportional to 28,328.14, 39,091.17 and 16,390.63

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Solution

The fourth proportional to 28,328.14, 39,091.17 and 16,390.63 is: 22,618.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.14 : 39,091.17 = 16,390.63 : x
  2. Step 2: Convert to fraction form
    28,328.14/39,091.17 = 16,390.63/x
  3. Step 3: Cross multiply
    28,328.14x = 39,091.17 × 16,390.63
  4. Step 4: Simplify right side
    28,328.14x = 640,728,903.74
  5. Step 5: Solve for x
    x = 640,728,903.74/28,328.14
  6. Step 6: Final answer
    x = 22,618.11

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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.