Home / 12,011.36-18,014.76-3,689.06

Finding the Fourth Proportional to 12,011.36, 18,014.76 and 3,689.06

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Solution

The fourth proportional to 12,011.36, 18,014.76 and 3,689.06 is: 5,532.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,011.36 : 18,014.76 = 3,689.06 : x
  2. Step 2: Convert to fraction form
    12,011.36/18,014.76 = 3,689.06/x
  3. Step 3: Cross multiply
    12,011.36x = 18,014.76 × 3,689.06
  4. Step 4: Simplify right side
    12,011.36x = 66,457,530.53
  5. Step 5: Solve for x
    x = 66,457,530.53/12,011.36
  6. Step 6: Final answer
    x = 5,532.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.