Home / 20,746.94-28,630.59-11,315.54

Finding the Fourth Proportional to 20,746.94, 28,630.59 and 11,315.54

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Solution

The fourth proportional to 20,746.94, 28,630.59 and 11,315.54 is: 15,615.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.94 : 28,630.59 = 11,315.54 : x
  2. Step 2: Convert to fraction form
    20,746.94/28,630.59 = 11,315.54/x
  3. Step 3: Cross multiply
    20,746.94x = 28,630.59 × 11,315.54
  4. Step 4: Simplify right side
    20,746.94x = 323,970,586.37
  5. Step 5: Solve for x
    x = 323,970,586.37/20,746.94
  6. Step 6: Final answer
    x = 15,615.34

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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.