Home / 15,356.70-21,192.48-9,387.09

Finding the Fourth Proportional to 15,356.70, 21,192.48 and 9,387.09

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Solution

The fourth proportional to 15,356.70, 21,192.48 and 9,387.09 is: 12,954.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.70 : 21,192.48 = 9,387.09 : x
  2. Step 2: Convert to fraction form
    15,356.70/21,192.48 = 9,387.09/x
  3. Step 3: Cross multiply
    15,356.70x = 21,192.48 × 9,387.09
  4. Step 4: Simplify right side
    15,356.70x = 198,935,717.08
  5. Step 5: Solve for x
    x = 198,935,717.08/15,356.70
  6. Step 6: Final answer
    x = 12,954.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.