Home / 13,887.18-19,159.57-7,914.58

Finding the Fourth Proportional to 13,887.18, 19,159.57 and 7,914.58

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Solution

The fourth proportional to 13,887.18, 19,159.57 and 7,914.58 is: 10,919.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.18 : 19,159.57 = 7,914.58 : x
  2. Step 2: Convert to fraction form
    13,887.18/19,159.57 = 7,914.58/x
  3. Step 3: Cross multiply
    13,887.18x = 19,159.57 × 7,914.58
  4. Step 4: Simplify right side
    13,887.18x = 151,639,911.52
  5. Step 5: Solve for x
    x = 151,639,911.52/13,887.18
  6. Step 6: Final answer
    x = 10,919.42

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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.