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Finding the Fourth Proportional to 21,519.93, 32,279.90 and 6,728.93

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Solution

The fourth proportional to 21,519.93, 32,279.90 and 6,728.93 is: 10,093.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,519.93 : 32,279.90 = 6,728.93 : x
  2. Step 2: Convert to fraction form
    21,519.93/32,279.90 = 6,728.93/x
  3. Step 3: Cross multiply
    21,519.93x = 32,279.90 × 6,728.93
  4. Step 4: Simplify right side
    21,519.93x = 217,209,187.51
  5. Step 5: Solve for x
    x = 217,209,187.51/21,519.93
  6. Step 6: Final answer
    x = 10,093.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.