Home / 13,775.88-20,669.34-5,011.40

Finding the Fourth Proportional to 13,775.88, 20,669.34 and 5,011.40

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Solution

The fourth proportional to 13,775.88, 20,669.34 and 5,011.40 is: 7,519.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.88 : 20,669.34 = 5,011.40 : x
  2. Step 2: Convert to fraction form
    13,775.88/20,669.34 = 5,011.40/x
  3. Step 3: Cross multiply
    13,775.88x = 20,669.34 × 5,011.40
  4. Step 4: Simplify right side
    13,775.88x = 103,582,330.48
  5. Step 5: Solve for x
    x = 103,582,330.48/13,775.88
  6. Step 6: Final answer
    x = 7,519.11

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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.