Home / 13,411.72-20,238.19-12,948.40

Finding the Fourth Proportional to 13,411.72, 20,238.19 and 12,948.40

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Solution

The fourth proportional to 13,411.72, 20,238.19 and 12,948.40 is: 19,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.72 : 20,238.19 = 12,948.40 : x
  2. Step 2: Convert to fraction form
    13,411.72/20,238.19 = 12,948.40/x
  3. Step 3: Cross multiply
    13,411.72x = 20,238.19 × 12,948.40
  4. Step 4: Simplify right side
    13,411.72x = 262,052,179.40
  5. Step 5: Solve for x
    x = 262,052,179.40/13,411.72
  6. Step 6: Final answer
    x = 19,539.04

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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.