Home / 21,313.08-31,974.19-6,521.49

Finding the Fourth Proportional to 21,313.08, 31,974.19 and 6,521.49

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Solution

The fourth proportional to 21,313.08, 31,974.19 and 6,521.49 is: 9,783.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.08 : 31,974.19 = 6,521.49 : x
  2. Step 2: Convert to fraction form
    21,313.08/31,974.19 = 6,521.49/x
  3. Step 3: Cross multiply
    21,313.08x = 31,974.19 × 6,521.49
  4. Step 4: Simplify right side
    21,313.08x = 208,519,344.04
  5. Step 5: Solve for x
    x = 208,519,344.04/21,313.08
  6. Step 6: Final answer
    x = 9,783.63

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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.