Home / 21,490.66-32,222.70-7,447.42

Finding the Fourth Proportional to 21,490.66, 32,222.70 and 7,447.42

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Solution

The fourth proportional to 21,490.66, 32,222.70 and 7,447.42 is: 11,166.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.66 : 32,222.70 = 7,447.42 : x
  2. Step 2: Convert to fraction form
    21,490.66/32,222.70 = 7,447.42/x
  3. Step 3: Cross multiply
    21,490.66x = 32,222.70 × 7,447.42
  4. Step 4: Simplify right side
    21,490.66x = 239,975,980.43
  5. Step 5: Solve for x
    x = 239,975,980.43/21,490.66
  6. Step 6: Final answer
    x = 11,166.52

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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.