Home / 15,683.09-21,642.67-8,609.36

Finding the Fourth Proportional to 15,683.09, 21,642.67 and 8,609.36

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Solution

The fourth proportional to 15,683.09, 21,642.67 and 8,609.36 is: 11,880.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.09 : 21,642.67 = 8,609.36 : x
  2. Step 2: Convert to fraction form
    15,683.09/21,642.67 = 8,609.36/x
  3. Step 3: Cross multiply
    15,683.09x = 21,642.67 × 8,609.36
  4. Step 4: Simplify right side
    15,683.09x = 186,329,537.39
  5. Step 5: Solve for x
    x = 186,329,537.39/15,683.09
  6. Step 6: Final answer
    x = 11,880.92

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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.