Home / 21,813.87-32,669.33-10,685.55

Finding the Fourth Proportional to 21,813.87, 32,669.33 and 10,685.55

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Solution

The fourth proportional to 21,813.87, 32,669.33 and 10,685.55 is: 16,003.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.87 : 32,669.33 = 10,685.55 : x
  2. Step 2: Convert to fraction form
    21,813.87/32,669.33 = 10,685.55/x
  3. Step 3: Cross multiply
    21,813.87x = 32,669.33 × 10,685.55
  4. Step 4: Simplify right side
    21,813.87x = 349,089,705.75
  5. Step 5: Solve for x
    x = 349,089,705.75/21,813.87
  6. Step 6: Final answer
    x = 16,003.11

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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.