Home / 18,780.54-25,915.35-11,225.37

Finding the Fourth Proportional to 18,780.54, 25,915.35 and 11,225.37

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Solution

The fourth proportional to 18,780.54, 25,915.35 and 11,225.37 is: 15,489.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.54 : 25,915.35 = 11,225.37 : x
  2. Step 2: Convert to fraction form
    18,780.54/25,915.35 = 11,225.37/x
  3. Step 3: Cross multiply
    18,780.54x = 25,915.35 × 11,225.37
  4. Step 4: Simplify right side
    18,780.54x = 290,909,392.43
  5. Step 5: Solve for x
    x = 290,909,392.43/18,780.54
  6. Step 6: Final answer
    x = 15,489.94

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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.