Home / 12,887.10-17,761.68-10,364.76

Finding the Fourth Proportional to 12,887.10, 17,761.68 and 10,364.76

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Solution

The fourth proportional to 12,887.10, 17,761.68 and 10,364.76 is: 14,285.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.10 : 17,761.68 = 10,364.76 : x
  2. Step 2: Convert to fraction form
    12,887.10/17,761.68 = 10,364.76/x
  3. Step 3: Cross multiply
    12,887.10x = 17,761.68 × 10,364.76
  4. Step 4: Simplify right side
    12,887.10x = 184,095,550.40
  5. Step 5: Solve for x
    x = 184,095,550.40/12,887.10
  6. Step 6: Final answer
    x = 14,285.26

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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.