Home / 9,921.90-13,692.27-5,446.15

Finding the Fourth Proportional to 9,921.90, 13,692.27 and 5,446.15

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Solution

The fourth proportional to 9,921.90, 13,692.27 and 5,446.15 is: 7,515.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.90 : 13,692.27 = 5,446.15 : x
  2. Step 2: Convert to fraction form
    9,921.90/13,692.27 = 5,446.15/x
  3. Step 3: Cross multiply
    9,921.90x = 13,692.27 × 5,446.15
  4. Step 4: Simplify right side
    9,921.90x = 74,570,156.26
  5. Step 5: Solve for x
    x = 74,570,156.26/9,921.90
  6. Step 6: Final answer
    x = 7,515.71

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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.