Home / 11,429.81-15,772.40-6,393.16

Finding the Fourth Proportional to 11,429.81, 15,772.40 and 6,393.16

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Solution

The fourth proportional to 11,429.81, 15,772.40 and 6,393.16 is: 8,822.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.81 : 15,772.40 = 6,393.16 : x
  2. Step 2: Convert to fraction form
    11,429.81/15,772.40 = 6,393.16/x
  3. Step 3: Cross multiply
    11,429.81x = 15,772.40 × 6,393.16
  4. Step 4: Simplify right side
    11,429.81x = 100,835,476.78
  5. Step 5: Solve for x
    x = 100,835,476.78/11,429.81
  6. Step 6: Final answer
    x = 8,822.15

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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.