Home / 9,921.77-13,692.27-6,145.55

Finding the Fourth Proportional to 9,921.77, 13,692.27 and 6,145.55

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Solution

The fourth proportional to 9,921.77, 13,692.27 and 6,145.55 is: 8,481.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.77 : 13,692.27 = 6,145.55 : x
  2. Step 2: Convert to fraction form
    9,921.77/13,692.27 = 6,145.55/x
  3. Step 3: Cross multiply
    9,921.77x = 13,692.27 × 6,145.55
  4. Step 4: Simplify right side
    9,921.77x = 84,146,461.44
  5. Step 5: Solve for x
    x = 84,146,461.44/9,921.77
  6. Step 6: Final answer
    x = 8,481.00

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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.