Home / 28,887.78-43,333.38-8,111.28

Finding the Fourth Proportional to 28,887.78, 43,333.38 and 8,111.28

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Solution

The fourth proportional to 28,887.78, 43,333.38 and 8,111.28 is: 12,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.78 : 43,333.38 = 8,111.28 : x
  2. Step 2: Convert to fraction form
    28,887.78/43,333.38 = 8,111.28/x
  3. Step 3: Cross multiply
    28,887.78x = 43,333.38 × 8,111.28
  4. Step 4: Simplify right side
    28,887.78x = 351,489,178.53
  5. Step 5: Solve for x
    x = 351,489,178.53/28,887.78
  6. Step 6: Final answer
    x = 12,167.40

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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.