Home / 20,728.02-28,605.22-11,297.18

Finding the Fourth Proportional to 20,728.02, 28,605.22 and 11,297.18

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Solution

The fourth proportional to 20,728.02, 28,605.22 and 11,297.18 is: 15,590.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.02 : 28,605.22 = 11,297.18 : x
  2. Step 2: Convert to fraction form
    20,728.02/28,605.22 = 11,297.18/x
  3. Step 3: Cross multiply
    20,728.02x = 28,605.22 × 11,297.18
  4. Step 4: Simplify right side
    20,728.02x = 323,158,319.28
  5. Step 5: Solve for x
    x = 323,158,319.28/20,728.02
  6. Step 6: Final answer
    x = 15,590.41

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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.