Home / 11,726.39-16,182.29-6,420.89

Finding the Fourth Proportional to 11,726.39, 16,182.29 and 6,420.89

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Solution

The fourth proportional to 11,726.39, 16,182.29 and 6,420.89 is: 8,860.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,726.39 : 16,182.29 = 6,420.89 : x
  2. Step 2: Convert to fraction form
    11,726.39/16,182.29 = 6,420.89/x
  3. Step 3: Cross multiply
    11,726.39x = 16,182.29 × 6,420.89
  4. Step 4: Simplify right side
    11,726.39x = 103,904,639.18
  5. Step 5: Solve for x
    x = 103,904,639.18/11,726.39
  6. Step 6: Final answer
    x = 8,860.76

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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.