Home / 21,487.09-32,168.53-12,575.29

Finding the Fourth Proportional to 21,487.09, 32,168.53 and 12,575.29

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Solution

The fourth proportional to 21,487.09, 32,168.53 and 12,575.29 is: 18,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.09 : 32,168.53 = 12,575.29 : x
  2. Step 2: Convert to fraction form
    21,487.09/32,168.53 = 12,575.29/x
  3. Step 3: Cross multiply
    21,487.09x = 32,168.53 × 12,575.29
  4. Step 4: Simplify right side
    21,487.09x = 404,528,593.62
  5. Step 5: Solve for x
    x = 404,528,593.62/21,487.09
  6. Step 6: Final answer
    x = 18,826.59

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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.