Home / 13,878.07-19,151.84-8,213.13

Finding the Fourth Proportional to 13,878.07, 19,151.84 and 8,213.13

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Solution

The fourth proportional to 13,878.07, 19,151.84 and 8,213.13 is: 11,334.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.07 : 19,151.84 = 8,213.13 : x
  2. Step 2: Convert to fraction form
    13,878.07/19,151.84 = 8,213.13/x
  3. Step 3: Cross multiply
    13,878.07x = 19,151.84 × 8,213.13
  4. Step 4: Simplify right side
    13,878.07x = 157,296,572.19
  5. Step 5: Solve for x
    x = 157,296,572.19/13,878.07
  6. Step 6: Final answer
    x = 11,334.18

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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.