Home / 15,869.71-21,890.28-10,211.83

Finding the Fourth Proportional to 15,869.71, 21,890.28 and 10,211.83

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Solution

The fourth proportional to 15,869.71, 21,890.28 and 10,211.83 is: 14,085.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.71 : 21,890.28 = 10,211.83 : x
  2. Step 2: Convert to fraction form
    15,869.71/21,890.28 = 10,211.83/x
  3. Step 3: Cross multiply
    15,869.71x = 21,890.28 × 10,211.83
  4. Step 4: Simplify right side
    15,869.71x = 223,539,744.14
  5. Step 5: Solve for x
    x = 223,539,744.14/15,869.71
  6. Step 6: Final answer
    x = 14,085.94

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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.