Home / 13,825.28-20,688.36-7,953.08

Finding the Fourth Proportional to 13,825.28, 20,688.36 and 7,953.08

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Solution

The fourth proportional to 13,825.28, 20,688.36 and 7,953.08 is: 11,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.28 : 20,688.36 = 7,953.08 : x
  2. Step 2: Convert to fraction form
    13,825.28/20,688.36 = 7,953.08/x
  3. Step 3: Cross multiply
    13,825.28x = 20,688.36 × 7,953.08
  4. Step 4: Simplify right side
    13,825.28x = 164,536,182.15
  5. Step 5: Solve for x
    x = 164,536,182.15/13,825.28
  6. Step 6: Final answer
    x = 11,901.11

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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.