Home / 13,587.82-20,385.54-7,748.56

Finding the Fourth Proportional to 13,587.82, 20,385.54 and 7,748.56

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Solution

The fourth proportional to 13,587.82, 20,385.54 and 7,748.56 is: 11,625.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.82 : 20,385.54 = 7,748.56 : x
  2. Step 2: Convert to fraction form
    13,587.82/20,385.54 = 7,748.56/x
  3. Step 3: Cross multiply
    13,587.82x = 20,385.54 × 7,748.56
  4. Step 4: Simplify right side
    13,587.82x = 157,958,579.82
  5. Step 5: Solve for x
    x = 157,958,579.82/13,587.82
  6. Step 6: Final answer
    x = 11,625.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.