Home / 9,020.16-12,456.32-8,529.28

Finding the Fourth Proportional to 9,020.16, 12,456.32 and 8,529.28

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Solution

The fourth proportional to 9,020.16, 12,456.32 and 8,529.28 is: 11,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,020.16 : 12,456.32 = 8,529.28 : x
  2. Step 2: Convert to fraction form
    9,020.16/12,456.32 = 8,529.28/x
  3. Step 3: Cross multiply
    9,020.16x = 12,456.32 × 8,529.28
  4. Step 4: Simplify right side
    9,020.16x = 106,243,441.05
  5. Step 5: Solve for x
    x = 106,243,441.05/9,020.16
  6. Step 6: Final answer
    x = 11,778.44

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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.