Home / 28,153.72-42,236.60-10,384.43

Finding the Fourth Proportional to 28,153.72, 42,236.60 and 10,384.43

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Solution

The fourth proportional to 28,153.72, 42,236.60 and 10,384.43 is: 15,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.72 : 42,236.60 = 10,384.43 : x
  2. Step 2: Convert to fraction form
    28,153.72/42,236.60 = 10,384.43/x
  3. Step 3: Cross multiply
    28,153.72x = 42,236.60 × 10,384.43
  4. Step 4: Simplify right side
    28,153.72x = 438,603,016.14
  5. Step 5: Solve for x
    x = 438,603,016.14/28,153.72
  6. Step 6: Final answer
    x = 15,578.87

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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.