Home / 15,343.26-21,171.23-8,628.49

Finding the Fourth Proportional to 15,343.26, 21,171.23 and 8,628.49

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Solution

The fourth proportional to 15,343.26, 21,171.23 and 8,628.49 is: 11,905.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343.26 : 21,171.23 = 8,628.49 : x
  2. Step 2: Convert to fraction form
    15,343.26/21,171.23 = 8,628.49/x
  3. Step 3: Cross multiply
    15,343.26x = 21,171.23 × 8,628.49
  4. Step 4: Simplify right side
    15,343.26x = 182,675,746.34
  5. Step 5: Solve for x
    x = 182,675,746.34/15,343.26
  6. Step 6: Final answer
    x = 11,905.93

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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.