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Finding the Fourth Proportional to 13,021.71, 19,530.09 and 6,351.51

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Solution

The fourth proportional to 13,021.71, 19,530.09 and 6,351.51 is: 9,526.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.71 : 19,530.09 = 6,351.51 : x
  2. Step 2: Convert to fraction form
    13,021.71/19,530.09 = 6,351.51/x
  3. Step 3: Cross multiply
    13,021.71x = 19,530.09 × 6,351.51
  4. Step 4: Simplify right side
    13,021.71x = 124,045,561.94
  5. Step 5: Solve for x
    x = 124,045,561.94/13,021.71
  6. Step 6: Final answer
    x = 9,526.06

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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.