Home / 21,274.79-31,909.74-5,693.63

Finding the Fourth Proportional to 21,274.79, 31,909.74 and 5,693.63

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Solution

The fourth proportional to 21,274.79, 31,909.74 and 5,693.63 is: 8,539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.79 : 31,909.74 = 5,693.63 : x
  2. Step 2: Convert to fraction form
    21,274.79/31,909.74 = 5,693.63/x
  3. Step 3: Cross multiply
    21,274.79x = 31,909.74 × 5,693.63
  4. Step 4: Simplify right side
    21,274.79x = 181,682,093.41
  5. Step 5: Solve for x
    x = 181,682,093.41/21,274.79
  6. Step 6: Final answer
    x = 8,539.79

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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.