Home / 20,647.30-28,495.17-11,695.18

Finding the Fourth Proportional to 20,647.30, 28,495.17 and 11,695.18

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Solution

The fourth proportional to 20,647.30, 28,495.17 and 11,695.18 is: 16,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.30 : 28,495.17 = 11,695.18 : x
  2. Step 2: Convert to fraction form
    20,647.30/28,495.17 = 11,695.18/x
  3. Step 3: Cross multiply
    20,647.30x = 28,495.17 × 11,695.18
  4. Step 4: Simplify right side
    20,647.30x = 333,255,999.80
  5. Step 5: Solve for x
    x = 333,255,999.80/20,647.30
  6. Step 6: Final answer
    x = 16,140.42

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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.