Home / 18,772.32-28,153.56-5,621.16

Finding the Fourth Proportional to 18,772.32, 28,153.56 and 5,621.16

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Solution

The fourth proportional to 18,772.32, 28,153.56 and 5,621.16 is: 8,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.32 : 28,153.56 = 5,621.16 : x
  2. Step 2: Convert to fraction form
    18,772.32/28,153.56 = 5,621.16/x
  3. Step 3: Cross multiply
    18,772.32x = 28,153.56 × 5,621.16
  4. Step 4: Simplify right side
    18,772.32x = 158,255,665.33
  5. Step 5: Solve for x
    x = 158,255,665.33/18,772.32
  6. Step 6: Final answer
    x = 8,430.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.