Home / 20,837.59-28,755.16-11,887.99

Finding the Fourth Proportional to 20,837.59, 28,755.16 and 11,887.99

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Solution

The fourth proportional to 20,837.59, 28,755.16 and 11,887.99 is: 16,405.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.59 : 28,755.16 = 11,887.99 : x
  2. Step 2: Convert to fraction form
    20,837.59/28,755.16 = 11,887.99/x
  3. Step 3: Cross multiply
    20,837.59x = 28,755.16 × 11,887.99
  4. Step 4: Simplify right side
    20,837.59x = 341,841,054.53
  5. Step 5: Solve for x
    x = 341,841,054.53/20,837.59
  6. Step 6: Final answer
    x = 16,405.02

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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.