Home / 15,659.35-21,597.34-13,766.92

Finding the Fourth Proportional to 15,659.35, 21,597.34 and 13,766.92

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Solution

The fourth proportional to 15,659.35, 21,597.34 and 13,766.92 is: 18,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.35 : 21,597.34 = 13,766.92 : x
  2. Step 2: Convert to fraction form
    15,659.35/21,597.34 = 13,766.92/x
  3. Step 3: Cross multiply
    15,659.35x = 21,597.34 × 13,766.92
  4. Step 4: Simplify right side
    15,659.35x = 297,328,675.17
  5. Step 5: Solve for x
    x = 297,328,675.17/15,659.35
  6. Step 6: Final answer
    x = 18,987.30

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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.