Home / 21,747.15-30,008.48-12,187.53

Finding the Fourth Proportional to 21,747.15, 30,008.48 and 12,187.53

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Solution

The fourth proportional to 21,747.15, 30,008.48 and 12,187.53 is: 16,817.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.15 : 30,008.48 = 12,187.53 : x
  2. Step 2: Convert to fraction form
    21,747.15/30,008.48 = 12,187.53/x
  3. Step 3: Cross multiply
    21,747.15x = 30,008.48 × 12,187.53
  4. Step 4: Simplify right side
    21,747.15x = 365,729,189.32
  5. Step 5: Solve for x
    x = 365,729,189.32/21,747.15
  6. Step 6: Final answer
    x = 16,817.34

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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.