Home / 11,429.07-15,772.01-6,393.30

Finding the Fourth Proportional to 11,429.07, 15,772.01 and 6,393.30

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Solution

The fourth proportional to 11,429.07, 15,772.01 and 6,393.30 is: 8,822.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.07 : 15,772.01 = 6,393.30 : x
  2. Step 2: Convert to fraction form
    11,429.07/15,772.01 = 6,393.30/x
  3. Step 3: Cross multiply
    11,429.07x = 15,772.01 × 6,393.30
  4. Step 4: Simplify right side
    11,429.07x = 100,835,159.57
  5. Step 5: Solve for x
    x = 100,835,159.57/11,429.07
  6. Step 6: Final answer
    x = 8,822.69

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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.