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Finding the Fourth Proportional to 14,658.58, 21,990.20 and 5,297.65

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Solution

The fourth proportional to 14,658.58, 21,990.20 and 5,297.65 is: 7,947.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,658.58 : 21,990.20 = 5,297.65 : x
  2. Step 2: Convert to fraction form
    14,658.58/21,990.20 = 5,297.65/x
  3. Step 3: Cross multiply
    14,658.58x = 21,990.20 × 5,297.65
  4. Step 4: Simplify right side
    14,658.58x = 116,496,259.83
  5. Step 5: Solve for x
    x = 116,496,259.83/14,658.58
  6. Step 6: Final answer
    x = 7,947.31

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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.