Home / 21,249.89-32,001.35-18,509.66

Finding the Fourth Proportional to 21,249.89, 32,001.35 and 18,509.66

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Solution

The fourth proportional to 21,249.89, 32,001.35 and 18,509.66 is: 27,874.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.89 : 32,001.35 = 18,509.66 : x
  2. Step 2: Convert to fraction form
    21,249.89/32,001.35 = 18,509.66/x
  3. Step 3: Cross multiply
    21,249.89x = 32,001.35 × 18,509.66
  4. Step 4: Simplify right side
    21,249.89x = 592,334,155.50
  5. Step 5: Solve for x
    x = 592,334,155.50/21,249.89
  6. Step 6: Final answer
    x = 27,874.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.