Home / 21,021.35-31,531.89-6,230.35

Finding the Fourth Proportional to 21,021.35, 31,531.89 and 6,230.35

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Solution

The fourth proportional to 21,021.35, 31,531.89 and 6,230.35 is: 9,345.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.35 : 31,531.89 = 6,230.35 : x
  2. Step 2: Convert to fraction form
    21,021.35/31,531.89 = 6,230.35/x
  3. Step 3: Cross multiply
    21,021.35x = 31,531.89 × 6,230.35
  4. Step 4: Simplify right side
    21,021.35x = 196,454,710.86
  5. Step 5: Solve for x
    x = 196,454,710.86/21,021.35
  6. Step 6: Final answer
    x = 9,345.48

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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.