Home / 21,890.64-32,866.38-15,211.41

Finding the Fourth Proportional to 21,890.64, 32,866.38 and 15,211.41

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Solution

The fourth proportional to 21,890.64, 32,866.38 and 15,211.41 is: 22,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.64 : 32,866.38 = 15,211.41 : x
  2. Step 2: Convert to fraction form
    21,890.64/32,866.38 = 15,211.41/x
  3. Step 3: Cross multiply
    21,890.64x = 32,866.38 × 15,211.41
  4. Step 4: Simplify right side
    21,890.64x = 499,943,981.40
  5. Step 5: Solve for x
    x = 499,943,981.40/21,890.64
  6. Step 6: Final answer
    x = 22,838.25

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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.