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Finding the Fourth Proportional to 18,852.50, 28,235.68 and 8,998.71

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Solution

The fourth proportional to 18,852.50, 28,235.68 and 8,998.71 is: 13,477.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,852.50 : 28,235.68 = 8,998.71 : x
  2. Step 2: Convert to fraction form
    18,852.50/28,235.68 = 8,998.71/x
  3. Step 3: Cross multiply
    18,852.50x = 28,235.68 × 8,998.71
  4. Step 4: Simplify right side
    18,852.50x = 254,084,673.48
  5. Step 5: Solve for x
    x = 254,084,673.48/18,852.50
  6. Step 6: Final answer
    x = 13,477.51

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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.