Home / 13,628.79-20,443.19-7,511.67

Finding the Fourth Proportional to 13,628.79, 20,443.19 and 7,511.67

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Solution

The fourth proportional to 13,628.79, 20,443.19 and 7,511.67 is: 11,267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.79 : 20,443.19 = 7,511.67 : x
  2. Step 2: Convert to fraction form
    13,628.79/20,443.19 = 7,511.67/x
  3. Step 3: Cross multiply
    13,628.79x = 20,443.19 × 7,511.67
  4. Step 4: Simplify right side
    13,628.79x = 153,562,459.47
  5. Step 5: Solve for x
    x = 153,562,459.47/13,628.79
  6. Step 6: Final answer
    x = 11,267.51

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Double scale
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Similar ratio
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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.