Home / 13,220.08-18,244.26-7,913.86

Finding the Fourth Proportional to 13,220.08, 18,244.26 and 7,913.86

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Solution

The fourth proportional to 13,220.08, 18,244.26 and 7,913.86 is: 10,921.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.08 : 18,244.26 = 7,913.86 : x
  2. Step 2: Convert to fraction form
    13,220.08/18,244.26 = 7,913.86/x
  3. Step 3: Cross multiply
    13,220.08x = 18,244.26 × 7,913.86
  4. Step 4: Simplify right side
    13,220.08x = 144,382,519.44
  5. Step 5: Solve for x
    x = 144,382,519.44/13,220.08
  6. Step 6: Final answer
    x = 10,921.46

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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.