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Finding the Fourth Proportional to 17,978.84, 24,754.34 and 15,284.76

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Solution

The fourth proportional to 17,978.84, 24,754.34 and 15,284.76 is: 21,044.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978.84 : 24,754.34 = 15,284.76 : x
  2. Step 2: Convert to fraction form
    17,978.84/24,754.34 = 15,284.76/x
  3. Step 3: Cross multiply
    17,978.84x = 24,754.34 × 15,284.76
  4. Step 4: Simplify right side
    17,978.84x = 378,364,184.07
  5. Step 5: Solve for x
    x = 378,364,184.07/17,978.84
  6. Step 6: Final answer
    x = 21,044.97

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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.