Home / 15,869.80-21,901.62-8,798.50

Finding the Fourth Proportional to 15,869.80, 21,901.62 and 8,798.50

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Solution

The fourth proportional to 15,869.80, 21,901.62 and 8,798.50 is: 12,142.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.80 : 21,901.62 = 8,798.50 : x
  2. Step 2: Convert to fraction form
    15,869.80/21,901.62 = 8,798.50/x
  3. Step 3: Cross multiply
    15,869.80x = 21,901.62 × 8,798.50
  4. Step 4: Simplify right side
    15,869.80x = 192,701,403.57
  5. Step 5: Solve for x
    x = 192,701,403.57/15,869.80
  6. Step 6: Final answer
    x = 12,142.65

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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.