Home / 21,020.63-31,531.75-7,169.63

Finding the Fourth Proportional to 21,020.63, 31,531.75 and 7,169.63

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Solution

The fourth proportional to 21,020.63, 31,531.75 and 7,169.63 is: 10,754.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.63 : 31,531.75 = 7,169.63 : x
  2. Step 2: Convert to fraction form
    21,020.63/31,531.75 = 7,169.63/x
  3. Step 3: Cross multiply
    21,020.63x = 31,531.75 × 7,169.63
  4. Step 4: Simplify right side
    21,020.63x = 226,070,805.17
  5. Step 5: Solve for x
    x = 226,070,805.17/21,020.63
  6. Step 6: Final answer
    x = 10,754.71

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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.