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Finding the Fourth Proportional to 28,426.16, 42,621.02 and 11,797.67

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Solution

The fourth proportional to 28,426.16, 42,621.02 and 11,797.67 is: 17,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.16 : 42,621.02 = 11,797.67 : x
  2. Step 2: Convert to fraction form
    28,426.16/42,621.02 = 11,797.67/x
  3. Step 3: Cross multiply
    28,426.16x = 42,621.02 × 11,797.67
  4. Step 4: Simplify right side
    28,426.16x = 502,828,456.93
  5. Step 5: Solve for x
    x = 502,828,456.93/28,426.16
  6. Step 6: Final answer
    x = 17,688.94

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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.