Home / 21,309.31-29,405.60-12,232.55

Finding the Fourth Proportional to 21,309.31, 29,405.60 and 12,232.55

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Solution

The fourth proportional to 21,309.31, 29,405.60 and 12,232.55 is: 16,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.31 : 29,405.60 = 12,232.55 : x
  2. Step 2: Convert to fraction form
    21,309.31/29,405.60 = 12,232.55/x
  3. Step 3: Cross multiply
    21,309.31x = 29,405.60 × 12,232.55
  4. Step 4: Simplify right side
    21,309.31x = 359,705,530.50
  5. Step 5: Solve for x
    x = 359,705,530.50/21,309.31
  6. Step 6: Final answer
    x = 16,880.20

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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.