Home / 15,748.40-21,733.12-8,675.20

Finding the Fourth Proportional to 15,748.40, 21,733.12 and 8,675.20

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Solution

The fourth proportional to 15,748.40, 21,733.12 and 8,675.20 is: 11,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.40 : 21,733.12 = 8,675.20 : x
  2. Step 2: Convert to fraction form
    15,748.40/21,733.12 = 8,675.20/x
  3. Step 3: Cross multiply
    15,748.40x = 21,733.12 × 8,675.20
  4. Step 4: Simplify right side
    15,748.40x = 188,539,162.62
  5. Step 5: Solve for x
    x = 188,539,162.62/15,748.40
  6. Step 6: Final answer
    x = 11,971.96

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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.