Home / 20,683.55-28,543.14-11,252.12

Finding the Fourth Proportional to 20,683.55, 28,543.14 and 11,252.12

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Solution

The fourth proportional to 20,683.55, 28,543.14 and 11,252.12 is: 15,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.55 : 28,543.14 = 11,252.12 : x
  2. Step 2: Convert to fraction form
    20,683.55/28,543.14 = 11,252.12/x
  3. Step 3: Cross multiply
    20,683.55x = 28,543.14 × 11,252.12
  4. Step 4: Simplify right side
    20,683.55x = 321,170,836.46
  5. Step 5: Solve for x
    x = 321,170,836.46/20,683.55
  6. Step 6: Final answer
    x = 15,527.84

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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.