Home / 21,873.48-30,185.52-12,442.20

Finding the Fourth Proportional to 21,873.48, 30,185.52 and 12,442.20

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Solution

The fourth proportional to 21,873.48, 30,185.52 and 12,442.20 is: 17,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,873.48 : 30,185.52 = 12,442.20 : x
  2. Step 2: Convert to fraction form
    21,873.48/30,185.52 = 12,442.20/x
  3. Step 3: Cross multiply
    21,873.48x = 30,185.52 × 12,442.20
  4. Step 4: Simplify right side
    21,873.48x = 375,574,276.94
  5. Step 5: Solve for x
    x = 375,574,276.94/21,873.48
  6. Step 6: Final answer
    x = 17,170.30

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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.