Home / 15,907.36-21,950.64-9,191.68

Finding the Fourth Proportional to 15,907.36, 21,950.64 and 9,191.68

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Solution

The fourth proportional to 15,907.36, 21,950.64 and 9,191.68 is: 12,683.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,907.36 : 21,950.64 = 9,191.68 : x
  2. Step 2: Convert to fraction form
    15,907.36/21,950.64 = 9,191.68/x
  3. Step 3: Cross multiply
    15,907.36x = 21,950.64 × 9,191.68
  4. Step 4: Simplify right side
    15,907.36x = 201,763,258.68
  5. Step 5: Solve for x
    x = 201,763,258.68/15,907.36
  6. Step 6: Final answer
    x = 12,683.64

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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.