Home / 13,247.20-18,274.68-7,940.08

Finding the Fourth Proportional to 13,247.20, 18,274.68 and 7,940.08

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Solution

The fourth proportional to 13,247.20, 18,274.68 and 7,940.08 is: 10,953.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.20 : 18,274.68 = 7,940.08 : x
  2. Step 2: Convert to fraction form
    13,247.20/18,274.68 = 7,940.08/x
  3. Step 3: Cross multiply
    13,247.20x = 18,274.68 × 7,940.08
  4. Step 4: Simplify right side
    13,247.20x = 145,102,421.17
  5. Step 5: Solve for x
    x = 145,102,421.17/13,247.20
  6. Step 6: Final answer
    x = 10,953.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.