Home / 21,381.28-32,076.78-9,697.84

Finding the Fourth Proportional to 21,381.28, 32,076.78 and 9,697.84

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Solution

The fourth proportional to 21,381.28, 32,076.78 and 9,697.84 is: 14,548.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.28 : 32,076.78 = 9,697.84 : x
  2. Step 2: Convert to fraction form
    21,381.28/32,076.78 = 9,697.84/x
  3. Step 3: Cross multiply
    21,381.28x = 32,076.78 × 9,697.84
  4. Step 4: Simplify right side
    21,381.28x = 311,075,480.16
  5. Step 5: Solve for x
    x = 311,075,480.16/21,381.28
  6. Step 6: Final answer
    x = 14,548.96

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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.