Home / 21,192.38-31,788.59-7,341.38

Finding the Fourth Proportional to 21,192.38, 31,788.59 and 7,341.38

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Solution

The fourth proportional to 21,192.38, 31,788.59 and 7,341.38 is: 11,012.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.38 : 31,788.59 = 7,341.38 : x
  2. Step 2: Convert to fraction form
    21,192.38/31,788.59 = 7,341.38/x
  3. Step 3: Cross multiply
    21,192.38x = 31,788.59 × 7,341.38
  4. Step 4: Simplify right side
    21,192.38x = 233,371,923.20
  5. Step 5: Solve for x
    x = 233,371,923.20/21,192.38
  6. Step 6: Final answer
    x = 11,012.07

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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.