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Finding the Fourth Proportional to 18,948.58, 28,485.16 and 17,578.46

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Solution

The fourth proportional to 18,948.58, 28,485.16 and 17,578.46 is: 26,425.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.58 : 28,485.16 = 17,578.46 : x
  2. Step 2: Convert to fraction form
    18,948.58/28,485.16 = 17,578.46/x
  3. Step 3: Cross multiply
    18,948.58x = 28,485.16 × 17,578.46
  4. Step 4: Simplify right side
    18,948.58x = 500,725,272.92
  5. Step 5: Solve for x
    x = 500,725,272.92/18,948.58
  6. Step 6: Final answer
    x = 26,425.48

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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.