Home / 21,455.20-32,204.40-10,370.80

Finding the Fourth Proportional to 21,455.20, 32,204.40 and 10,370.80

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Solution

The fourth proportional to 21,455.20, 32,204.40 and 10,370.80 is: 15,566.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.20 : 32,204.40 = 10,370.80 : x
  2. Step 2: Convert to fraction form
    21,455.20/32,204.40 = 10,370.80/x
  3. Step 3: Cross multiply
    21,455.20x = 32,204.40 × 10,370.80
  4. Step 4: Simplify right side
    21,455.20x = 333,985,391.52
  5. Step 5: Solve for x
    x = 333,985,391.52/21,455.20
  6. Step 6: Final answer
    x = 15,566.64

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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.