Home / 21,274.61-29,357.81-11,712.63

Finding the Fourth Proportional to 21,274.61, 29,357.81 and 11,712.63

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Solution

The fourth proportional to 21,274.61, 29,357.81 and 11,712.63 is: 16,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.61 : 29,357.81 = 11,712.63 : x
  2. Step 2: Convert to fraction form
    21,274.61/29,357.81 = 11,712.63/x
  3. Step 3: Cross multiply
    21,274.61x = 29,357.81 × 11,712.63
  4. Step 4: Simplify right side
    21,274.61x = 343,857,107.58
  5. Step 5: Solve for x
    x = 343,857,107.58/21,274.61
  6. Step 6: Final answer
    x = 16,162.80

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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.