Home / 15,344.49-21,083.63-12,195.21

Finding the Fourth Proportional to 15,344.49, 21,083.63 and 12,195.21

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Solution

The fourth proportional to 15,344.49, 21,083.63 and 12,195.21 is: 16,756.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.49 : 21,083.63 = 12,195.21 : x
  2. Step 2: Convert to fraction form
    15,344.49/21,083.63 = 12,195.21/x
  3. Step 3: Cross multiply
    15,344.49x = 21,083.63 × 12,195.21
  4. Step 4: Simplify right side
    15,344.49x = 257,119,295.41
  5. Step 5: Solve for x
    x = 257,119,295.41/15,344.49
  6. Step 6: Final answer
    x = 16,756.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.