Home / 20,962.22-28,925.44-12,009.20

Finding the Fourth Proportional to 20,962.22, 28,925.44 and 12,009.20

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Solution

The fourth proportional to 20,962.22, 28,925.44 and 12,009.20 is: 16,571.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.22 : 28,925.44 = 12,009.20 : x
  2. Step 2: Convert to fraction form
    20,962.22/28,925.44 = 12,009.20/x
  3. Step 3: Cross multiply
    20,962.22x = 28,925.44 × 12,009.20
  4. Step 4: Simplify right side
    20,962.22x = 347,371,436.34
  5. Step 5: Solve for x
    x = 347,371,436.34/20,962.22
  6. Step 6: Final answer
    x = 16,571.31

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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.