Home / 18,235.79-25,172.63-15,673.40

Finding the Fourth Proportional to 18,235.79, 25,172.63 and 15,673.40

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Solution

The fourth proportional to 18,235.79, 25,172.63 and 15,673.40 is: 21,635.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,235.79 : 25,172.63 = 15,673.40 : x
  2. Step 2: Convert to fraction form
    18,235.79/25,172.63 = 15,673.40/x
  3. Step 3: Cross multiply
    18,235.79x = 25,172.63 × 15,673.40
  4. Step 4: Simplify right side
    18,235.79x = 394,540,820.75
  5. Step 5: Solve for x
    x = 394,540,820.75/18,235.79
  6. Step 6: Final answer
    x = 21,635.52

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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.