Home / 21,251.23-31,880.49-6,461.62

Finding the Fourth Proportional to 21,251.23, 31,880.49 and 6,461.62

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Solution

The fourth proportional to 21,251.23, 31,880.49 and 6,461.62 is: 9,693.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.23 : 31,880.49 = 6,461.62 : x
  2. Step 2: Convert to fraction form
    21,251.23/31,880.49 = 6,461.62/x
  3. Step 3: Cross multiply
    21,251.23x = 31,880.49 × 6,461.62
  4. Step 4: Simplify right side
    21,251.23x = 205,999,611.79
  5. Step 5: Solve for x
    x = 205,999,611.79/21,251.23
  6. Step 6: Final answer
    x = 9,693.54

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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.