Home / 20,615.61-28,456.38-14,664.54

Finding the Fourth Proportional to 20,615.61, 28,456.38 and 14,664.54

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Solution

The fourth proportional to 20,615.61, 28,456.38 and 14,664.54 is: 20,241.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.61 : 28,456.38 = 14,664.54 : x
  2. Step 2: Convert to fraction form
    20,615.61/28,456.38 = 14,664.54/x
  3. Step 3: Cross multiply
    20,615.61x = 28,456.38 × 14,664.54
  4. Step 4: Simplify right side
    20,615.61x = 417,299,722.77
  5. Step 5: Solve for x
    x = 417,299,722.77/20,615.61
  6. Step 6: Final answer
    x = 20,241.93

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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.