Home / 21,431.20-32,148.96-7,389.36

Finding the Fourth Proportional to 21,431.20, 32,148.96 and 7,389.36

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Solution

The fourth proportional to 21,431.20, 32,148.96 and 7,389.36 is: 11,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.20 : 32,148.96 = 7,389.36 : x
  2. Step 2: Convert to fraction form
    21,431.20/32,148.96 = 7,389.36/x
  3. Step 3: Cross multiply
    21,431.20x = 32,148.96 × 7,389.36
  4. Step 4: Simplify right side
    21,431.20x = 237,560,239.07
  5. Step 5: Solve for x
    x = 237,560,239.07/21,431.20
  6. Step 6: Final answer
    x = 11,084.78

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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.