Home / 21,074.92-31,630.11-10,541.78

Finding the Fourth Proportional to 21,074.92, 31,630.11 and 10,541.78

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Solution

The fourth proportional to 21,074.92, 31,630.11 and 10,541.78 is: 15,821.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.92 : 31,630.11 = 10,541.78 : x
  2. Step 2: Convert to fraction form
    21,074.92/31,630.11 = 10,541.78/x
  3. Step 3: Cross multiply
    21,074.92x = 31,630.11 × 10,541.78
  4. Step 4: Simplify right side
    21,074.92x = 333,437,700.53
  5. Step 5: Solve for x
    x = 333,437,700.53/21,074.92
  6. Step 6: Final answer
    x = 15,821.54

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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.