Home / 21,270.02-31,921.43-17,120.18

Finding the Fourth Proportional to 21,270.02, 31,921.43 and 17,120.18

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Solution

The fourth proportional to 21,270.02, 31,921.43 and 17,120.18 is: 25,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.02 : 31,921.43 = 17,120.18 : x
  2. Step 2: Convert to fraction form
    21,270.02/31,921.43 = 17,120.18/x
  3. Step 3: Cross multiply
    21,270.02x = 31,921.43 × 17,120.18
  4. Step 4: Simplify right side
    21,270.02x = 546,500,621.66
  5. Step 5: Solve for x
    x = 546,500,621.66/21,270.02
  6. Step 6: Final answer
    x = 25,693.48

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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.