Home / 18,193.40-25,110.34-11,390.59

Finding the Fourth Proportional to 18,193.40, 25,110.34 and 11,390.59

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Solution

The fourth proportional to 18,193.40, 25,110.34 and 11,390.59 is: 15,721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,193.40 : 25,110.34 = 11,390.59 : x
  2. Step 2: Convert to fraction form
    18,193.40/25,110.34 = 11,390.59/x
  3. Step 3: Cross multiply
    18,193.40x = 25,110.34 × 11,390.59
  4. Step 4: Simplify right side
    18,193.40x = 286,021,462.15
  5. Step 5: Solve for x
    x = 286,021,462.15/18,193.40
  6. Step 6: Final answer
    x = 15,721.17

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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.