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Finding the Fourth Proportional to 29,578.71, 40,818.72 and 18,968.39

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Solution

The fourth proportional to 29,578.71, 40,818.72 and 18,968.39 is: 26,176.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,578.71 : 40,818.72 = 18,968.39 : x
  2. Step 2: Convert to fraction form
    29,578.71/40,818.72 = 18,968.39/x
  3. Step 3: Cross multiply
    29,578.71x = 40,818.72 × 18,968.39
  4. Step 4: Simplify right side
    29,578.71x = 774,265,196.17
  5. Step 5: Solve for x
    x = 774,265,196.17/29,578.71
  6. Step 6: Final answer
    x = 26,176.44

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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.