Home / 13,579.17-20,351.75-7,338.93

Finding the Fourth Proportional to 13,579.17, 20,351.75 and 7,338.93

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Solution

The fourth proportional to 13,579.17, 20,351.75 and 7,338.93 is: 10,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.17 : 20,351.75 = 7,338.93 : x
  2. Step 2: Convert to fraction form
    13,579.17/20,351.75 = 7,338.93/x
  3. Step 3: Cross multiply
    13,579.17x = 20,351.75 × 7,338.93
  4. Step 4: Simplify right side
    13,579.17x = 149,360,031.93
  5. Step 5: Solve for x
    x = 149,360,031.93/13,579.17
  6. Step 6: Final answer
    x = 10,999.20

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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.