Home / 20,484.50-28,266.57-11,986.18

Finding the Fourth Proportional to 20,484.50, 28,266.57 and 11,986.18

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Solution

The fourth proportional to 20,484.50, 28,266.57 and 11,986.18 is: 16,539.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.50 : 28,266.57 = 11,986.18 : x
  2. Step 2: Convert to fraction form
    20,484.50/28,266.57 = 11,986.18/x
  3. Step 3: Cross multiply
    20,484.50x = 28,266.57 × 11,986.18
  4. Step 4: Simplify right side
    20,484.50x = 338,808,125.34
  5. Step 5: Solve for x
    x = 338,808,125.34/20,484.50
  6. Step 6: Final answer
    x = 16,539.74

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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.