Home / 21,218.02-31,796.86-15,627.40

Finding the Fourth Proportional to 21,218.02, 31,796.86 and 15,627.40

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Solution

The fourth proportional to 21,218.02, 31,796.86 and 15,627.40 is: 23,418.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.02 : 31,796.86 = 15,627.40 : x
  2. Step 2: Convert to fraction form
    21,218.02/31,796.86 = 15,627.40/x
  3. Step 3: Cross multiply
    21,218.02x = 31,796.86 × 15,627.40
  4. Step 4: Simplify right side
    21,218.02x = 496,902,250.64
  5. Step 5: Solve for x
    x = 496,902,250.64/21,218.02
  6. Step 6: Final answer
    x = 23,418.88

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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.