Home / 13,146.36-18,141.94-8,430.63

Finding the Fourth Proportional to 13,146.36, 18,141.94 and 8,430.63

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Solution

The fourth proportional to 13,146.36, 18,141.94 and 8,430.63 is: 11,634.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.36 : 18,141.94 = 8,430.63 : x
  2. Step 2: Convert to fraction form
    13,146.36/18,141.94 = 8,430.63/x
  3. Step 3: Cross multiply
    13,146.36x = 18,141.94 × 8,430.63
  4. Step 4: Simplify right side
    13,146.36x = 152,947,983.62
  5. Step 5: Solve for x
    x = 152,947,983.62/13,146.36
  6. Step 6: Final answer
    x = 11,634.25

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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.