Home / 21,020.78-31,525.80-6,226.24

Finding the Fourth Proportional to 21,020.78, 31,525.80 and 6,226.24

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Solution

The fourth proportional to 21,020.78, 31,525.80 and 6,226.24 is: 9,337.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.78 : 31,525.80 = 6,226.24 : x
  2. Step 2: Convert to fraction form
    21,020.78/31,525.80 = 6,226.24/x
  3. Step 3: Cross multiply
    21,020.78x = 31,525.80 × 6,226.24
  4. Step 4: Simplify right side
    21,020.78x = 196,287,188.96
  5. Step 5: Solve for x
    x = 196,287,188.96/21,020.78
  6. Step 6: Final answer
    x = 9,337.77

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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.