Home / 15,608.45-21,539.75-8,534.86

Finding the Fourth Proportional to 15,608.45, 21,539.75 and 8,534.86

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Solution

The fourth proportional to 15,608.45, 21,539.75 and 8,534.86 is: 11,778.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,608.45 : 21,539.75 = 8,534.86 : x
  2. Step 2: Convert to fraction form
    15,608.45/21,539.75 = 8,534.86/x
  3. Step 3: Cross multiply
    15,608.45x = 21,539.75 × 8,534.86
  4. Step 4: Simplify right side
    15,608.45x = 183,838,654.16
  5. Step 5: Solve for x
    x = 183,838,654.16/15,608.45
  6. Step 6: Final answer
    x = 11,778.15

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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.