Home / 11,726.40-16,181.37-6,421.08

Finding the Fourth Proportional to 11,726.40, 16,181.37 and 6,421.08

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Solution

The fourth proportional to 11,726.40, 16,181.37 and 6,421.08 is: 8,860.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,726.40 : 16,181.37 = 6,421.08 : x
  2. Step 2: Convert to fraction form
    11,726.40/16,181.37 = 6,421.08/x
  3. Step 3: Cross multiply
    11,726.40x = 16,181.37 × 6,421.08
  4. Step 4: Simplify right side
    11,726.40x = 103,901,871.28
  5. Step 5: Solve for x
    x = 103,901,871.28/11,726.40
  6. Step 6: Final answer
    x = 8,860.51

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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.