Home / 15,237.26-20,980.67-13,338.21

Finding the Fourth Proportional to 15,237.26, 20,980.67 and 13,338.21

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Solution

The fourth proportional to 15,237.26, 20,980.67 and 13,338.21 is: 18,365.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,237.26 : 20,980.67 = 13,338.21 : x
  2. Step 2: Convert to fraction form
    15,237.26/20,980.67 = 13,338.21/x
  3. Step 3: Cross multiply
    15,237.26x = 20,980.67 × 13,338.21
  4. Step 4: Simplify right side
    15,237.26x = 279,844,515.71
  5. Step 5: Solve for x
    x = 279,844,515.71/15,237.26
  6. Step 6: Final answer
    x = 18,365.81

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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.