Home / 18,684.20-25,759.40-15,485.52

Finding the Fourth Proportional to 18,684.20, 25,759.40 and 15,485.52

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Solution

The fourth proportional to 18,684.20, 25,759.40 and 15,485.52 is: 21,349.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.20 : 25,759.40 = 15,485.52 : x
  2. Step 2: Convert to fraction form
    18,684.20/25,759.40 = 15,485.52/x
  3. Step 3: Cross multiply
    18,684.20x = 25,759.40 × 15,485.52
  4. Step 4: Simplify right side
    18,684.20x = 398,897,703.89
  5. Step 5: Solve for x
    x = 398,897,703.89/18,684.20
  6. Step 6: Final answer
    x = 21,349.47

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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.