Home / 20,433.66-28,203.21-12,055.02

Finding the Fourth Proportional to 20,433.66, 28,203.21 and 12,055.02

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Solution

The fourth proportional to 20,433.66, 28,203.21 and 12,055.02 is: 16,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.66 : 28,203.21 = 12,055.02 : x
  2. Step 2: Convert to fraction form
    20,433.66/28,203.21 = 12,055.02/x
  3. Step 3: Cross multiply
    20,433.66x = 28,203.21 × 12,055.02
  4. Step 4: Simplify right side
    20,433.66x = 339,990,260.61
  5. Step 5: Solve for x
    x = 339,990,260.61/20,433.66
  6. Step 6: Final answer
    x = 16,638.74

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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.