Home / 20,887.98-28,826.93-11,935.29

Finding the Fourth Proportional to 20,887.98, 28,826.93 and 11,935.29

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Solution

The fourth proportional to 20,887.98, 28,826.93 and 11,935.29 is: 16,471.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.98 : 28,826.93 = 11,935.29 : x
  2. Step 2: Convert to fraction form
    20,887.98/28,826.93 = 11,935.29/x
  3. Step 3: Cross multiply
    20,887.98x = 28,826.93 × 11,935.29
  4. Step 4: Simplify right side
    20,887.98x = 344,057,769.36
  5. Step 5: Solve for x
    x = 344,057,769.36/20,887.98
  6. Step 6: Final answer
    x = 16,471.57

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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.