Home / 12,220.65-16,840.31-8,673.93

Finding the Fourth Proportional to 12,220.65, 16,840.31 and 8,673.93

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Solution

The fourth proportional to 12,220.65, 16,840.31 and 8,673.93 is: 11,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.65 : 16,840.31 = 8,673.93 : x
  2. Step 2: Convert to fraction form
    12,220.65/16,840.31 = 8,673.93/x
  3. Step 3: Cross multiply
    12,220.65x = 16,840.31 × 8,673.93
  4. Step 4: Simplify right side
    12,220.65x = 146,071,626.75
  5. Step 5: Solve for x
    x = 146,071,626.75/12,220.65
  6. Step 6: Final answer
    x = 11,952.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.