Home / 13,581.60-20,378.25-7,346

Finding the Fourth Proportional to 13,581.60, 20,378.25 and 7,346

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Solution

The fourth proportional to 13,581.60, 20,378.25 and 7,346 is: 11,022.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.60 : 20,378.25 = 7,346 : x
  2. Step 2: Convert to fraction form
    13,581.60/20,378.25 = 7,346/x
  3. Step 3: Cross multiply
    13,581.60x = 20,378.25 × 7,346
  4. Step 4: Simplify right side
    13,581.60x = 149,698,624.50
  5. Step 5: Solve for x
    x = 149,698,624.50/13,581.60
  6. Step 6: Final answer
    x = 11,022.17

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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.