Home / 21,389.88-32,080.50-5,807.64

Finding the Fourth Proportional to 21,389.88, 32,080.50 and 5,807.64

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Solution

The fourth proportional to 21,389.88, 32,080.50 and 5,807.64 is: 8,710.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.88 : 32,080.50 = 5,807.64 : x
  2. Step 2: Convert to fraction form
    21,389.88/32,080.50 = 5,807.64/x
  3. Step 3: Cross multiply
    21,389.88x = 32,080.50 × 5,807.64
  4. Step 4: Simplify right side
    21,389.88x = 186,311,995.02
  5. Step 5: Solve for x
    x = 186,311,995.02/21,389.88
  6. Step 6: Final answer
    x = 8,710.29

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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.