Home / 13,703.39-18,910.76-7,415.76

Finding the Fourth Proportional to 13,703.39, 18,910.76 and 7,415.76

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Solution

The fourth proportional to 13,703.39, 18,910.76 and 7,415.76 is: 10,233.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.39 : 18,910.76 = 7,415.76 : x
  2. Step 2: Convert to fraction form
    13,703.39/18,910.76 = 7,415.76/x
  3. Step 3: Cross multiply
    13,703.39x = 18,910.76 × 7,415.76
  4. Step 4: Simplify right side
    13,703.39x = 140,237,657.58
  5. Step 5: Solve for x
    x = 140,237,657.58/13,703.39
  6. Step 6: Final answer
    x = 10,233.79

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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.