Home / 20,532.32-28,334.64-11,100.90

Finding the Fourth Proportional to 20,532.32, 28,334.64 and 11,100.90

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Solution

The fourth proportional to 20,532.32, 28,334.64 and 11,100.90 is: 15,319.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.32 : 28,334.64 = 11,100.90 : x
  2. Step 2: Convert to fraction form
    20,532.32/28,334.64 = 11,100.90/x
  3. Step 3: Cross multiply
    20,532.32x = 28,334.64 × 11,100.90
  4. Step 4: Simplify right side
    20,532.32x = 314,540,005.18
  5. Step 5: Solve for x
    x = 314,540,005.18/20,532.32
  6. Step 6: Final answer
    x = 15,319.26

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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.