Home / 21,162.60-31,696.20-16,445.88

Finding the Fourth Proportional to 21,162.60, 31,696.20 and 16,445.88

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Solution

The fourth proportional to 21,162.60, 31,696.20 and 16,445.88 is: 24,631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.60 : 31,696.20 = 16,445.88 : x
  2. Step 2: Convert to fraction form
    21,162.60/31,696.20 = 16,445.88/x
  3. Step 3: Cross multiply
    21,162.60x = 31,696.20 × 16,445.88
  4. Step 4: Simplify right side
    21,162.60x = 521,271,901.66
  5. Step 5: Solve for x
    x = 521,271,901.66/21,162.60
  6. Step 6: Final answer
    x = 24,631.75

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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.