Home / 21,406.60-32,148.30-15,569.80

Finding the Fourth Proportional to 21,406.60, 32,148.30 and 15,569.80

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Solution

The fourth proportional to 21,406.60, 32,148.30 and 15,569.80 is: 23,382.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.60 : 32,148.30 = 15,569.80 : x
  2. Step 2: Convert to fraction form
    21,406.60/32,148.30 = 15,569.80/x
  3. Step 3: Cross multiply
    21,406.60x = 32,148.30 × 15,569.80
  4. Step 4: Simplify right side
    21,406.60x = 500,542,601.34
  5. Step 5: Solve for x
    x = 500,542,601.34/21,406.60
  6. Step 6: Final answer
    x = 23,382.63

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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.