Home / 13,634.29-18,810.80-11,112.07

Finding the Fourth Proportional to 13,634.29, 18,810.80 and 11,112.07

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Solution

The fourth proportional to 13,634.29, 18,810.80 and 11,112.07 is: 15,330.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.29 : 18,810.80 = 11,112.07 : x
  2. Step 2: Convert to fraction form
    13,634.29/18,810.80 = 11,112.07/x
  3. Step 3: Cross multiply
    13,634.29x = 18,810.80 × 11,112.07
  4. Step 4: Simplify right side
    13,634.29x = 209,026,931.96
  5. Step 5: Solve for x
    x = 209,026,931.96/13,634.29
  6. Step 6: Final answer
    x = 15,330.97

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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.