Home / 20,504.61-28,296.90-11,551.55

Finding the Fourth Proportional to 20,504.61, 28,296.90 and 11,551.55

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Solution

The fourth proportional to 20,504.61, 28,296.90 and 11,551.55 is: 15,941.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.61 : 28,296.90 = 11,551.55 : x
  2. Step 2: Convert to fraction form
    20,504.61/28,296.90 = 11,551.55/x
  3. Step 3: Cross multiply
    20,504.61x = 28,296.90 × 11,551.55
  4. Step 4: Simplify right side
    20,504.61x = 326,872,913.71
  5. Step 5: Solve for x
    x = 326,872,913.71/20,504.61
  6. Step 6: Final answer
    x = 15,941.44

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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.