Home / 15,122.82-20,863.94-9,152.30

Finding the Fourth Proportional to 15,122.82, 20,863.94 and 9,152.30

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Solution

The fourth proportional to 15,122.82, 20,863.94 and 9,152.30 is: 12,626.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.82 : 20,863.94 = 9,152.30 : x
  2. Step 2: Convert to fraction form
    15,122.82/20,863.94 = 9,152.30/x
  3. Step 3: Cross multiply
    15,122.82x = 20,863.94 × 9,152.30
  4. Step 4: Simplify right side
    15,122.82x = 190,953,038.06
  5. Step 5: Solve for x
    x = 190,953,038.06/15,122.82
  6. Step 6: Final answer
    x = 12,626.81

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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.