Home / 13,883.18-19,159.29-7,914.78

Finding the Fourth Proportional to 13,883.18, 19,159.29 and 7,914.78

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Solution

The fourth proportional to 13,883.18, 19,159.29 and 7,914.78 is: 10,922.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.18 : 19,159.29 = 7,914.78 : x
  2. Step 2: Convert to fraction form
    13,883.18/19,159.29 = 7,914.78/x
  3. Step 3: Cross multiply
    13,883.18x = 19,159.29 × 7,914.78
  4. Step 4: Simplify right side
    13,883.18x = 151,641,565.31
  5. Step 5: Solve for x
    x = 151,641,565.31/13,883.18
  6. Step 6: Final answer
    x = 10,922.69

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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.