Home / 13,458.24-20,220.21-12,712.23

Finding the Fourth Proportional to 13,458.24, 20,220.21 and 12,712.23

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Solution

The fourth proportional to 13,458.24, 20,220.21 and 12,712.23 is: 19,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.24 : 20,220.21 = 12,712.23 : x
  2. Step 2: Convert to fraction form
    13,458.24/20,220.21 = 12,712.23/x
  3. Step 3: Cross multiply
    13,458.24x = 20,220.21 × 12,712.23
  4. Step 4: Simplify right side
    13,458.24x = 257,043,960.17
  5. Step 5: Solve for x
    x = 257,043,960.17/13,458.24
  6. Step 6: Final answer
    x = 19,099.37

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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.