Home / 21,328.35-31,995-8,846.79

Finding the Fourth Proportional to 21,328.35, 31,995 and 8,846.79

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Solution

The fourth proportional to 21,328.35, 31,995 and 8,846.79 is: 13,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.35 : 31,995 = 8,846.79 : x
  2. Step 2: Convert to fraction form
    21,328.35/31,995 = 8,846.79/x
  3. Step 3: Cross multiply
    21,328.35x = 31,995 × 8,846.79
  4. Step 4: Simplify right side
    21,328.35x = 283,052,926.07
  5. Step 5: Solve for x
    x = 283,052,926.07/21,328.35
  6. Step 6: Final answer
    x = 13,271.21

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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.