Home / 21,431.40-32,132.70-9,738.60

Finding the Fourth Proportional to 21,431.40, 32,132.70 and 9,738.60

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Solution

The fourth proportional to 21,431.40, 32,132.70 and 9,738.60 is: 14,601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.40 : 32,132.70 = 9,738.60 : x
  2. Step 2: Convert to fraction form
    21,431.40/32,132.70 = 9,738.60/x
  3. Step 3: Cross multiply
    21,431.40x = 32,132.70 × 9,738.60
  4. Step 4: Simplify right side
    21,431.40x = 312,927,512.22
  5. Step 5: Solve for x
    x = 312,927,512.22/21,431.40
  6. Step 6: Final answer
    x = 14,601.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.