Home / 13,410.72-20,236.68-12,947.40

Finding the Fourth Proportional to 13,410.72, 20,236.68 and 12,947.40

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Solution

The fourth proportional to 13,410.72, 20,236.68 and 12,947.40 is: 19,537.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.72 : 20,236.68 = 12,947.40 : x
  2. Step 2: Convert to fraction form
    13,410.72/20,236.68 = 12,947.40/x
  3. Step 3: Cross multiply
    13,410.72x = 20,236.68 × 12,947.40
  4. Step 4: Simplify right side
    13,410.72x = 262,012,390.63
  5. Step 5: Solve for x
    x = 262,012,390.63/13,410.72
  6. Step 6: Final answer
    x = 19,537.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.