Home / 13,774.48-19,013.08-8,108.78

Finding the Fourth Proportional to 13,774.48, 19,013.08 and 8,108.78

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Solution

The fourth proportional to 13,774.48, 19,013.08 and 8,108.78 is: 11,192.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,774.48 : 19,013.08 = 8,108.78 : x
  2. Step 2: Convert to fraction form
    13,774.48/19,013.08 = 8,108.78/x
  3. Step 3: Cross multiply
    13,774.48x = 19,013.08 × 8,108.78
  4. Step 4: Simplify right side
    13,774.48x = 154,172,943.13
  5. Step 5: Solve for x
    x = 154,172,943.13/13,774.48
  6. Step 6: Final answer
    x = 11,192.65

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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.