Home / 9,439.42-14,215.32-8,221.54

Finding the Fourth Proportional to 9,439.42, 14,215.32 and 8,221.54

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Solution

The fourth proportional to 9,439.42, 14,215.32 and 8,221.54 is: 12,381.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,439.42 : 14,215.32 = 8,221.54 : x
  2. Step 2: Convert to fraction form
    9,439.42/14,215.32 = 8,221.54/x
  3. Step 3: Cross multiply
    9,439.42x = 14,215.32 × 8,221.54
  4. Step 4: Simplify right side
    9,439.42x = 116,871,816.24
  5. Step 5: Solve for x
    x = 116,871,816.24/9,439.42
  6. Step 6: Final answer
    x = 12,381.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.