Home / 28,188.63-42,284.92-11,321.64

Finding the Fourth Proportional to 28,188.63, 42,284.92 and 11,321.64

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Solution

The fourth proportional to 28,188.63, 42,284.92 and 11,321.64 is: 16,983.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.63 : 42,284.92 = 11,321.64 : x
  2. Step 2: Convert to fraction form
    28,188.63/42,284.92 = 11,321.64/x
  3. Step 3: Cross multiply
    28,188.63x = 42,284.92 × 11,321.64
  4. Step 4: Simplify right side
    28,188.63x = 478,734,641.67
  5. Step 5: Solve for x
    x = 478,734,641.67/28,188.63
  6. Step 6: Final answer
    x = 16,983.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.