Home / 21,332.02-31,984.30-8,860.64

Finding the Fourth Proportional to 21,332.02, 31,984.30 and 8,860.64

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Solution

The fourth proportional to 21,332.02, 31,984.30 and 8,860.64 is: 13,285.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.02 : 31,984.30 = 8,860.64 : x
  2. Step 2: Convert to fraction form
    21,332.02/31,984.30 = 8,860.64/x
  3. Step 3: Cross multiply
    21,332.02x = 31,984.30 × 8,860.64
  4. Step 4: Simplify right side
    21,332.02x = 283,401,367.95
  5. Step 5: Solve for x
    x = 283,401,367.95/21,332.02
  6. Step 6: Final answer
    x = 13,285.26

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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.