Home / 20,472.48-28,243.44-12,512.16

Finding the Fourth Proportional to 20,472.48, 28,243.44 and 12,512.16

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Solution

The fourth proportional to 20,472.48, 28,243.44 and 12,512.16 is: 17,261.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.48 : 28,243.44 = 12,512.16 : x
  2. Step 2: Convert to fraction form
    20,472.48/28,243.44 = 12,512.16/x
  3. Step 3: Cross multiply
    20,472.48x = 28,243.44 × 12,512.16
  4. Step 4: Simplify right side
    20,472.48x = 353,386,440.23
  5. Step 5: Solve for x
    x = 353,386,440.23/20,472.48
  6. Step 6: Final answer
    x = 17,261.54

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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.