Home / 13,253.08-18,287.20-7,663

Finding the Fourth Proportional to 13,253.08, 18,287.20 and 7,663

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Solution

The fourth proportional to 13,253.08, 18,287.20 and 7,663 is: 10,573.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.08 : 18,287.20 = 7,663 : x
  2. Step 2: Convert to fraction form
    13,253.08/18,287.20 = 7,663/x
  3. Step 3: Cross multiply
    13,253.08x = 18,287.20 × 7,663
  4. Step 4: Simplify right side
    13,253.08x = 140,134,813.60
  5. Step 5: Solve for x
    x = 140,134,813.60/13,253.08
  6. Step 6: Final answer
    x = 10,573.75

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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.