Home / 21,336.15-29,443.77-11,904.69

Finding the Fourth Proportional to 21,336.15, 29,443.77 and 11,904.69

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Solution

The fourth proportional to 21,336.15, 29,443.77 and 11,904.69 is: 16,428.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.15 : 29,443.77 = 11,904.69 : x
  2. Step 2: Convert to fraction form
    21,336.15/29,443.77 = 11,904.69/x
  3. Step 3: Cross multiply
    21,336.15x = 29,443.77 × 11,904.69
  4. Step 4: Simplify right side
    21,336.15x = 350,518,954.28
  5. Step 5: Solve for x
    x = 350,518,954.28/21,336.15
  6. Step 6: Final answer
    x = 16,428.41

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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.