Home / 13,165.74-19,755.90-7,887.78

Finding the Fourth Proportional to 13,165.74, 19,755.90 and 7,887.78

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Solution

The fourth proportional to 13,165.74, 19,755.90 and 7,887.78 is: 11,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.74 : 19,755.90 = 7,887.78 : x
  2. Step 2: Convert to fraction form
    13,165.74/19,755.90 = 7,887.78/x
  3. Step 3: Cross multiply
    13,165.74x = 19,755.90 × 7,887.78
  4. Step 4: Simplify right side
    13,165.74x = 155,830,192.90
  5. Step 5: Solve for x
    x = 155,830,192.90/13,165.74
  6. Step 6: Final answer
    x = 11,836.04

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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.