Home / 20,700.88-28,567.28-11,269.50

Finding the Fourth Proportional to 20,700.88, 28,567.28 and 11,269.50

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Solution

The fourth proportional to 20,700.88, 28,567.28 and 11,269.50 is: 15,551.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.88 : 28,567.28 = 11,269.50 : x
  2. Step 2: Convert to fraction form
    20,700.88/28,567.28 = 11,269.50/x
  3. Step 3: Cross multiply
    20,700.88x = 28,567.28 × 11,269.50
  4. Step 4: Simplify right side
    20,700.88x = 321,938,961.96
  5. Step 5: Solve for x
    x = 321,938,961.96/20,700.88
  6. Step 6: Final answer
    x = 15,551.95

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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.