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Finding the Fourth Proportional to 30,348.84, 41,878.02 and 18,415.08

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Solution

The fourth proportional to 30,348.84, 41,878.02 and 18,415.08 is: 25,410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348.84 : 41,878.02 = 18,415.08 : x
  2. Step 2: Convert to fraction form
    30,348.84/41,878.02 = 18,415.08/x
  3. Step 3: Cross multiply
    30,348.84x = 41,878.02 × 18,415.08
  4. Step 4: Simplify right side
    30,348.84x = 771,187,088.54
  5. Step 5: Solve for x
    x = 771,187,088.54/30,348.84
  6. Step 6: Final answer
    x = 25,410.76

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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.