Home / 20,219.16-27,915.54-18,964.46

Finding the Fourth Proportional to 20,219.16, 27,915.54 and 18,964.46

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Solution

The fourth proportional to 20,219.16, 27,915.54 and 18,964.46 is: 26,183.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.16 : 27,915.54 = 18,964.46 : x
  2. Step 2: Convert to fraction form
    20,219.16/27,915.54 = 18,964.46/x
  3. Step 3: Cross multiply
    20,219.16x = 27,915.54 × 18,964.46
  4. Step 4: Simplify right side
    20,219.16x = 529,403,141.71
  5. Step 5: Solve for x
    x = 529,403,141.71/20,219.16
  6. Step 6: Final answer
    x = 26,183.24

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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.