Home / 11,807.12-16,293.80-6,429.47

Finding the Fourth Proportional to 11,807.12, 16,293.80 and 6,429.47

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Solution

The fourth proportional to 11,807.12, 16,293.80 and 6,429.47 is: 8,872.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,807.12 : 16,293.80 = 6,429.47 : x
  2. Step 2: Convert to fraction form
    11,807.12/16,293.80 = 6,429.47/x
  3. Step 3: Cross multiply
    11,807.12x = 16,293.80 × 6,429.47
  4. Step 4: Simplify right side
    11,807.12x = 104,760,498.29
  5. Step 5: Solve for x
    x = 104,760,498.29/11,807.12
  6. Step 6: Final answer
    x = 8,872.65

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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.