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Finding the Fourth Proportional to 18,392.15, 27,589.85 and 5,913.29

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Solution

The fourth proportional to 18,392.15, 27,589.85 and 5,913.29 is: 8,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.15 : 27,589.85 = 5,913.29 : x
  2. Step 2: Convert to fraction form
    18,392.15/27,589.85 = 5,913.29/x
  3. Step 3: Cross multiply
    18,392.15x = 27,589.85 × 5,913.29
  4. Step 4: Simplify right side
    18,392.15x = 163,146,616.59
  5. Step 5: Solve for x
    x = 163,146,616.59/18,392.15
  6. Step 6: Final answer
    x = 8,870.45

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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.