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Finding the Fourth Proportional to 22,101.68, 30,492.79 and 12,540.51

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Solution

The fourth proportional to 22,101.68, 30,492.79 and 12,540.51 is: 17,301.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,101.68 : 30,492.79 = 12,540.51 : x
  2. Step 2: Convert to fraction form
    22,101.68/30,492.79 = 12,540.51/x
  3. Step 3: Cross multiply
    22,101.68x = 30,492.79 × 12,540.51
  4. Step 4: Simplify right side
    22,101.68x = 382,395,106.57
  5. Step 5: Solve for x
    x = 382,395,106.57/22,101.68
  6. Step 6: Final answer
    x = 17,301.63

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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.