Home / 12,339.68-18,504.63-5,320.22

Finding the Fourth Proportional to 12,339.68, 18,504.63 and 5,320.22

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Solution

The fourth proportional to 12,339.68, 18,504.63 and 5,320.22 is: 7,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.68 : 18,504.63 = 5,320.22 : x
  2. Step 2: Convert to fraction form
    12,339.68/18,504.63 = 5,320.22/x
  3. Step 3: Cross multiply
    12,339.68x = 18,504.63 × 5,320.22
  4. Step 4: Simplify right side
    12,339.68x = 98,448,702.62
  5. Step 5: Solve for x
    x = 98,448,702.62/12,339.68
  6. Step 6: Final answer
    x = 7,978.22

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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.