Home / 21,016.37-31,529.48-8,366.90

Finding the Fourth Proportional to 21,016.37, 31,529.48 and 8,366.90

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Solution

The fourth proportional to 21,016.37, 31,529.48 and 8,366.90 is: 12,552.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016.37 : 31,529.48 = 8,366.90 : x
  2. Step 2: Convert to fraction form
    21,016.37/31,529.48 = 8,366.90/x
  3. Step 3: Cross multiply
    21,016.37x = 31,529.48 × 8,366.90
  4. Step 4: Simplify right side
    21,016.37x = 263,803,916.68
  5. Step 5: Solve for x
    x = 263,803,916.68/21,016.37
  6. Step 6: Final answer
    x = 12,552.31

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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.