Home / 13,605.82-20,416.52-5,284.76

Finding the Fourth Proportional to 13,605.82, 20,416.52 and 5,284.76

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Solution

The fourth proportional to 13,605.82, 20,416.52 and 5,284.76 is: 7,930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.82 : 20,416.52 = 5,284.76 : x
  2. Step 2: Convert to fraction form
    13,605.82/20,416.52 = 5,284.76/x
  3. Step 3: Cross multiply
    13,605.82x = 20,416.52 × 5,284.76
  4. Step 4: Simplify right side
    13,605.82x = 107,896,408.24
  5. Step 5: Solve for x
    x = 107,896,408.24/13,605.82
  6. Step 6: Final answer
    x = 7,930.17

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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.