Home / 20,539.09-28,342.93-11,586.56

Finding the Fourth Proportional to 20,539.09, 28,342.93 and 11,586.56

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Solution

The fourth proportional to 20,539.09, 28,342.93 and 11,586.56 is: 15,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.09 : 28,342.93 = 11,586.56 : x
  2. Step 2: Convert to fraction form
    20,539.09/28,342.93 = 11,586.56/x
  3. Step 3: Cross multiply
    20,539.09x = 28,342.93 × 11,586.56
  4. Step 4: Simplify right side
    20,539.09x = 328,397,059.02
  5. Step 5: Solve for x
    x = 328,397,059.02/20,539.09
  6. Step 6: Final answer
    x = 15,988.88

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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.