Home / 28,219.94-42,330.81-10,455.05

Finding the Fourth Proportional to 28,219.94, 42,330.81 and 10,455.05

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Solution

The fourth proportional to 28,219.94, 42,330.81 and 10,455.05 is: 15,682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.94 : 42,330.81 = 10,455.05 : x
  2. Step 2: Convert to fraction form
    28,219.94/42,330.81 = 10,455.05/x
  3. Step 3: Cross multiply
    28,219.94x = 42,330.81 × 10,455.05
  4. Step 4: Simplify right side
    28,219.94x = 442,570,735.09
  5. Step 5: Solve for x
    x = 442,570,735.09/28,219.94
  6. Step 6: Final answer
    x = 15,682.91

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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.