Home / 13,333.40-18,386.24-11,451.20

Finding the Fourth Proportional to 13,333.40, 18,386.24 and 11,451.20

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Solution

The fourth proportional to 13,333.40, 18,386.24 and 11,451.20 is: 15,790.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,333.40 : 18,386.24 = 11,451.20 : x
  2. Step 2: Convert to fraction form
    13,333.40/18,386.24 = 11,451.20/x
  3. Step 3: Cross multiply
    13,333.40x = 18,386.24 × 11,451.20
  4. Step 4: Simplify right side
    13,333.40x = 210,544,511.49
  5. Step 5: Solve for x
    x = 210,544,511.49/13,333.40
  6. Step 6: Final answer
    x = 15,790.76

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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.