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Finding the Fourth Proportional to 18,393.72, 27,590.06 and 5,913.65

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Solution

The fourth proportional to 18,393.72, 27,590.06 and 5,913.65 is: 8,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.72 : 27,590.06 = 5,913.65 : x
  2. Step 2: Convert to fraction form
    18,393.72/27,590.06 = 5,913.65/x
  3. Step 3: Cross multiply
    18,393.72x = 27,590.06 × 5,913.65
  4. Step 4: Simplify right side
    18,393.72x = 163,157,790.80
  5. Step 5: Solve for x
    x = 163,157,790.80/18,393.72
  6. Step 6: Final answer
    x = 8,870.30

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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.