Home / 20,730.36-28,603.62-12,232.05

Finding the Fourth Proportional to 20,730.36, 28,603.62 and 12,232.05

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Solution

The fourth proportional to 20,730.36, 28,603.62 and 12,232.05 is: 16,877.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.36 : 28,603.62 = 12,232.05 : x
  2. Step 2: Convert to fraction form
    20,730.36/28,603.62 = 12,232.05/x
  3. Step 3: Cross multiply
    20,730.36x = 28,603.62 × 12,232.05
  4. Step 4: Simplify right side
    20,730.36x = 349,880,910.02
  5. Step 5: Solve for x
    x = 349,880,910.02/20,730.36
  6. Step 6: Final answer
    x = 16,877.71

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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.