Home / 28,322.06-42,483.10-12,728.76

Finding the Fourth Proportional to 28,322.06, 42,483.10 and 12,728.76

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Solution

The fourth proportional to 28,322.06, 42,483.10 and 12,728.76 is: 19,093.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,322.06 : 42,483.10 = 12,728.76 : x
  2. Step 2: Convert to fraction form
    28,322.06/42,483.10 = 12,728.76/x
  3. Step 3: Cross multiply
    28,322.06x = 42,483.10 × 12,728.76
  4. Step 4: Simplify right side
    28,322.06x = 540,757,183.96
  5. Step 5: Solve for x
    x = 540,757,183.96/28,322.06
  6. Step 6: Final answer
    x = 19,093.14

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Similar ratio
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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.