Home / 20,466.48-28,243.32-12,508.80

Finding the Fourth Proportional to 20,466.48, 28,243.32 and 12,508.80

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Solution

The fourth proportional to 20,466.48, 28,243.32 and 12,508.80 is: 17,261.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.48 : 28,243.32 = 12,508.80 : x
  2. Step 2: Convert to fraction form
    20,466.48/28,243.32 = 12,508.80/x
  3. Step 3: Cross multiply
    20,466.48x = 28,243.32 × 12,508.80
  4. Step 4: Simplify right side
    20,466.48x = 353,290,041.22
  5. Step 5: Solve for x
    x = 353,290,041.22/20,466.48
  6. Step 6: Final answer
    x = 17,261.89

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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.