Home / 15,647.06-21,591.96-8,572.16

Finding the Fourth Proportional to 15,647.06, 21,591.96 and 8,572.16

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Solution

The fourth proportional to 15,647.06, 21,591.96 and 8,572.16 is: 11,829.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,647.06 : 21,591.96 = 8,572.16 : x
  2. Step 2: Convert to fraction form
    15,647.06/21,591.96 = 8,572.16/x
  3. Step 3: Cross multiply
    15,647.06x = 21,591.96 × 8,572.16
  4. Step 4: Simplify right side
    15,647.06x = 185,089,735.83
  5. Step 5: Solve for x
    x = 185,089,735.83/15,647.06
  6. Step 6: Final answer
    x = 11,829.04

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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.