Home / 13,857.11-19,118.04-7,887.26

Finding the Fourth Proportional to 13,857.11, 19,118.04 and 7,887.26

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Solution

The fourth proportional to 13,857.11, 19,118.04 and 7,887.26 is: 10,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.11 : 19,118.04 = 7,887.26 : x
  2. Step 2: Convert to fraction form
    13,857.11/19,118.04 = 7,887.26/x
  3. Step 3: Cross multiply
    13,857.11x = 19,118.04 × 7,887.26
  4. Step 4: Simplify right side
    13,857.11x = 150,788,952.17
  5. Step 5: Solve for x
    x = 150,788,952.17/13,857.11
  6. Step 6: Final answer
    x = 10,881.70

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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.