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Finding the Fourth Proportional to 18,901.91, 28,354.46 and 5,754.40

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Solution

The fourth proportional to 18,901.91, 28,354.46 and 5,754.40 is: 8,632.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.91 : 28,354.46 = 5,754.40 : x
  2. Step 2: Convert to fraction form
    18,901.91/28,354.46 = 5,754.40/x
  3. Step 3: Cross multiply
    18,901.91x = 28,354.46 × 5,754.40
  4. Step 4: Simplify right side
    18,901.91x = 163,162,804.97
  5. Step 5: Solve for x
    x = 163,162,804.97/18,901.91
  6. Step 6: Final answer
    x = 8,632.08

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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.