Home / 13,316.65-18,371.37-9,340.36

Finding the Fourth Proportional to 13,316.65, 18,371.37 and 9,340.36

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Solution

The fourth proportional to 13,316.65, 18,371.37 and 9,340.36 is: 12,885.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.65 : 18,371.37 = 9,340.36 : x
  2. Step 2: Convert to fraction form
    13,316.65/18,371.37 = 9,340.36/x
  3. Step 3: Cross multiply
    13,316.65x = 18,371.37 × 9,340.36
  4. Step 4: Simplify right side
    13,316.65x = 171,595,198.59
  5. Step 5: Solve for x
    x = 171,595,198.59/13,316.65
  6. Step 6: Final answer
    x = 12,885.77

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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.