Home / 22,221.76-30,665.60-13,271.26

Finding the Fourth Proportional to 22,221.76, 30,665.60 and 13,271.26

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Solution

The fourth proportional to 22,221.76, 30,665.60 and 13,271.26 is: 18,314.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,221.76 : 30,665.60 = 13,271.26 : x
  2. Step 2: Convert to fraction form
    22,221.76/30,665.60 = 13,271.26/x
  3. Step 3: Cross multiply
    22,221.76x = 30,665.60 × 13,271.26
  4. Step 4: Simplify right side
    22,221.76x = 406,971,150.66
  5. Step 5: Solve for x
    x = 406,971,150.66/22,221.76
  6. Step 6: Final answer
    x = 18,314.08

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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.