Home / 20,679.08-28,536.30-11,247.66

Finding the Fourth Proportional to 20,679.08, 28,536.30 and 11,247.66

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Solution

The fourth proportional to 20,679.08, 28,536.30 and 11,247.66 is: 15,521.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.08 : 28,536.30 = 11,247.66 : x
  2. Step 2: Convert to fraction form
    20,679.08/28,536.30 = 11,247.66/x
  3. Step 3: Cross multiply
    20,679.08x = 28,536.30 × 11,247.66
  4. Step 4: Simplify right side
    20,679.08x = 320,966,600.06
  5. Step 5: Solve for x
    x = 320,966,600.06/20,679.08
  6. Step 6: Final answer
    x = 15,521.32

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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.