Home / 21,839.79-30,148.26-15,043.35

Finding the Fourth Proportional to 21,839.79, 30,148.26 and 15,043.35

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Solution

The fourth proportional to 21,839.79, 30,148.26 and 15,043.35 is: 20,766.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.79 : 30,148.26 = 15,043.35 : x
  2. Step 2: Convert to fraction form
    21,839.79/30,148.26 = 15,043.35/x
  3. Step 3: Cross multiply
    21,839.79x = 30,148.26 × 15,043.35
  4. Step 4: Simplify right side
    21,839.79x = 453,530,827.07
  5. Step 5: Solve for x
    x = 453,530,827.07/21,839.79
  6. Step 6: Final answer
    x = 20,766.26

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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.