Home / 13,789.64-20,688.11-7,214.06

Finding the Fourth Proportional to 13,789.64, 20,688.11 and 7,214.06

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Solution

The fourth proportional to 13,789.64, 20,688.11 and 7,214.06 is: 10,822.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.64 : 20,688.11 = 7,214.06 : x
  2. Step 2: Convert to fraction form
    13,789.64/20,688.11 = 7,214.06/x
  3. Step 3: Cross multiply
    13,789.64x = 20,688.11 × 7,214.06
  4. Step 4: Simplify right side
    13,789.64x = 149,245,127.32
  5. Step 5: Solve for x
    x = 149,245,127.32/13,789.64
  6. Step 6: Final answer
    x = 10,822.99

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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.