Home / 9,921.78-13,692.46-5,673.53

Finding the Fourth Proportional to 9,921.78, 13,692.46 and 5,673.53

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Solution

The fourth proportional to 9,921.78, 13,692.46 and 5,673.53 is: 7,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.78 : 13,692.46 = 5,673.53 : x
  2. Step 2: Convert to fraction form
    9,921.78/13,692.46 = 5,673.53/x
  3. Step 3: Cross multiply
    9,921.78x = 13,692.46 × 5,673.53
  4. Step 4: Simplify right side
    9,921.78x = 77,684,582.58
  5. Step 5: Solve for x
    x = 77,684,582.58/9,921.78
  6. Step 6: Final answer
    x = 7,829.70

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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.