Home / 15,404.03-21,257.08-8,689.56

Finding the Fourth Proportional to 15,404.03, 21,257.08 and 8,689.56

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Solution

The fourth proportional to 15,404.03, 21,257.08 and 8,689.56 is: 11,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,404.03 : 21,257.08 = 8,689.56 : x
  2. Step 2: Convert to fraction form
    15,404.03/21,257.08 = 8,689.56/x
  3. Step 3: Cross multiply
    15,404.03x = 21,257.08 × 8,689.56
  4. Step 4: Simplify right side
    15,404.03x = 184,714,672.08
  5. Step 5: Solve for x
    x = 184,714,672.08/15,404.03
  6. Step 6: Final answer
    x = 11,991.32

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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.