Home / 21,339.60-29,447.64-11,909.52

Finding the Fourth Proportional to 21,339.60, 29,447.64 and 11,909.52

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Solution

The fourth proportional to 21,339.60, 29,447.64 and 11,909.52 is: 16,434.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.60 : 29,447.64 = 11,909.52 : x
  2. Step 2: Convert to fraction form
    21,339.60/29,447.64 = 11,909.52/x
  3. Step 3: Cross multiply
    21,339.60x = 29,447.64 × 11,909.52
  4. Step 4: Simplify right side
    21,339.60x = 350,707,257.53
  5. Step 5: Solve for x
    x = 350,707,257.53/21,339.60
  6. Step 6: Final answer
    x = 16,434.58

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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.