Home / 21,197.20-31,795.80-16,291.60

Finding the Fourth Proportional to 21,197.20, 31,795.80 and 16,291.60

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Solution

The fourth proportional to 21,197.20, 31,795.80 and 16,291.60 is: 24,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.20 : 31,795.80 = 16,291.60 : x
  2. Step 2: Convert to fraction form
    21,197.20/31,795.80 = 16,291.60/x
  3. Step 3: Cross multiply
    21,197.20x = 31,795.80 × 16,291.60
  4. Step 4: Simplify right side
    21,197.20x = 518,004,455.28
  5. Step 5: Solve for x
    x = 518,004,455.28/21,197.20
  6. Step 6: Final answer
    x = 24,437.40

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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.