Home / 15,453.26-21,317.28-9,405.35

Finding the Fourth Proportional to 15,453.26, 21,317.28 and 9,405.35

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Solution

The fourth proportional to 15,453.26, 21,317.28 and 9,405.35 is: 12,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.26 : 21,317.28 = 9,405.35 : x
  2. Step 2: Convert to fraction form
    15,453.26/21,317.28 = 9,405.35/x
  3. Step 3: Cross multiply
    15,453.26x = 21,317.28 × 9,405.35
  4. Step 4: Simplify right side
    15,453.26x = 200,496,479.45
  5. Step 5: Solve for x
    x = 200,496,479.45/15,453.26
  6. Step 6: Final answer
    x = 12,974.38

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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.