Home / 15,659.09-21,596.99-13,766.66

Finding the Fourth Proportional to 15,659.09, 21,596.99 and 13,766.66

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Solution

The fourth proportional to 15,659.09, 21,596.99 and 13,766.66 is: 18,986.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.09 : 21,596.99 = 13,766.66 : x
  2. Step 2: Convert to fraction form
    15,659.09/21,596.99 = 13,766.66/x
  3. Step 3: Cross multiply
    15,659.09x = 21,596.99 × 13,766.66
  4. Step 4: Simplify right side
    15,659.09x = 297,318,506.76
  5. Step 5: Solve for x
    x = 297,318,506.76/15,659.09
  6. Step 6: Final answer
    x = 18,986.96

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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.