Home / 13,053.79-18,000.99-11,171.62

Finding the Fourth Proportional to 13,053.79, 18,000.99 and 11,171.62

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Solution

The fourth proportional to 13,053.79, 18,000.99 and 11,171.62 is: 15,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.79 : 18,000.99 = 11,171.62 : x
  2. Step 2: Convert to fraction form
    13,053.79/18,000.99 = 11,171.62/x
  3. Step 3: Cross multiply
    13,053.79x = 18,000.99 × 11,171.62
  4. Step 4: Simplify right side
    13,053.79x = 201,100,219.90
  5. Step 5: Solve for x
    x = 201,100,219.90/13,053.79
  6. Step 6: Final answer
    x = 15,405.50

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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.