Home / 13,383.58-18,476.70-9,141.01

Finding the Fourth Proportional to 13,383.58, 18,476.70 and 9,141.01

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Solution

The fourth proportional to 13,383.58, 18,476.70 and 9,141.01 is: 12,619.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.58 : 18,476.70 = 9,141.01 : x
  2. Step 2: Convert to fraction form
    13,383.58/18,476.70 = 9,141.01/x
  3. Step 3: Cross multiply
    13,383.58x = 18,476.70 × 9,141.01
  4. Step 4: Simplify right side
    13,383.58x = 168,895,699.47
  5. Step 5: Solve for x
    x = 168,895,699.47/13,383.58
  6. Step 6: Final answer
    x = 12,619.62

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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.