Home / 21,269.46-31,917.10-7,952.15

Finding the Fourth Proportional to 21,269.46, 31,917.10 and 7,952.15

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Solution

The fourth proportional to 21,269.46, 31,917.10 and 7,952.15 is: 11,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.46 : 31,917.10 = 7,952.15 : x
  2. Step 2: Convert to fraction form
    21,269.46/31,917.10 = 7,952.15/x
  3. Step 3: Cross multiply
    21,269.46x = 31,917.10 × 7,952.15
  4. Step 4: Simplify right side
    21,269.46x = 253,809,566.77
  5. Step 5: Solve for x
    x = 253,809,566.77/21,269.46
  6. Step 6: Final answer
    x = 11,933.05

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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.