Home / 21,217.52-29,297.40-18,975.44

Finding the Fourth Proportional to 21,217.52, 29,297.40 and 18,975.44

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Solution

The fourth proportional to 21,217.52, 29,297.40 and 18,975.44 is: 26,201.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.52 : 29,297.40 = 18,975.44 : x
  2. Step 2: Convert to fraction form
    21,217.52/29,297.40 = 18,975.44/x
  3. Step 3: Cross multiply
    21,217.52x = 29,297.40 × 18,975.44
  4. Step 4: Simplify right side
    21,217.52x = 555,931,055.86
  5. Step 5: Solve for x
    x = 555,931,055.86/21,217.52
  6. Step 6: Final answer
    x = 26,201.51

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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.