Home / 13,451.11-18,520.28-11,430.26

Finding the Fourth Proportional to 13,451.11, 18,520.28 and 11,430.26

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Solution

The fourth proportional to 13,451.11, 18,520.28 and 11,430.26 is: 15,737.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.11 : 18,520.28 = 11,430.26 : x
  2. Step 2: Convert to fraction form
    13,451.11/18,520.28 = 11,430.26/x
  3. Step 3: Cross multiply
    13,451.11x = 18,520.28 × 11,430.26
  4. Step 4: Simplify right side
    13,451.11x = 211,691,730.63
  5. Step 5: Solve for x
    x = 211,691,730.63/13,451.11
  6. Step 6: Final answer
    x = 15,737.86

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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.