Home / 20,784.53-31,176.56-5,202.16

Finding the Fourth Proportional to 20,784.53, 31,176.56 and 5,202.16

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Solution

The fourth proportional to 20,784.53, 31,176.56 and 5,202.16 is: 7,803.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.53 : 31,176.56 = 5,202.16 : x
  2. Step 2: Convert to fraction form
    20,784.53/31,176.56 = 5,202.16/x
  3. Step 3: Cross multiply
    20,784.53x = 31,176.56 × 5,202.16
  4. Step 4: Simplify right side
    20,784.53x = 162,185,388.43
  5. Step 5: Solve for x
    x = 162,185,388.43/20,784.53
  6. Step 6: Final answer
    x = 7,803.18

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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.