Home / 13,518.75-18,655.67-7,550.51

Finding the Fourth Proportional to 13,518.75, 18,655.67 and 7,550.51

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Solution

The fourth proportional to 13,518.75, 18,655.67 and 7,550.51 is: 10,419.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.75 : 18,655.67 = 7,550.51 : x
  2. Step 2: Convert to fraction form
    13,518.75/18,655.67 = 7,550.51/x
  3. Step 3: Cross multiply
    13,518.75x = 18,655.67 × 7,550.51
  4. Step 4: Simplify right side
    13,518.75x = 140,859,691.86
  5. Step 5: Solve for x
    x = 140,859,691.86/13,518.75
  6. Step 6: Final answer
    x = 10,419.58

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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.