Home / 13,555.11-20,321.71-5,663.67

Finding the Fourth Proportional to 13,555.11, 20,321.71 and 5,663.67

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Solution

The fourth proportional to 13,555.11, 20,321.71 and 5,663.67 is: 8,490.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.11 : 20,321.71 = 5,663.67 : x
  2. Step 2: Convert to fraction form
    13,555.11/20,321.71 = 5,663.67/x
  3. Step 3: Cross multiply
    13,555.11x = 20,321.71 × 5,663.67
  4. Step 4: Simplify right side
    13,555.11x = 115,095,459.28
  5. Step 5: Solve for x
    x = 115,095,459.28/13,555.11
  6. Step 6: Final answer
    x = 8,490.93

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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.