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Finding the Fourth Proportional to 18,754.44, 28,141.44 and 13,602.84

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Solution

The fourth proportional to 18,754.44, 28,141.44 and 13,602.84 is: 20,411.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.44 : 28,141.44 = 13,602.84 : x
  2. Step 2: Convert to fraction form
    18,754.44/28,141.44 = 13,602.84/x
  3. Step 3: Cross multiply
    18,754.44x = 28,141.44 × 13,602.84
  4. Step 4: Simplify right side
    18,754.44x = 382,803,505.69
  5. Step 5: Solve for x
    x = 382,803,505.69/18,754.44
  6. Step 6: Final answer
    x = 20,411.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.