Home / 15,467.21-21,344.45-9,415.25

Finding the Fourth Proportional to 15,467.21, 21,344.45 and 9,415.25

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Solution

The fourth proportional to 15,467.21, 21,344.45 and 9,415.25 is: 12,992.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,467.21 : 21,344.45 = 9,415.25 : x
  2. Step 2: Convert to fraction form
    15,467.21/21,344.45 = 9,415.25/x
  3. Step 3: Cross multiply
    15,467.21x = 21,344.45 × 9,415.25
  4. Step 4: Simplify right side
    15,467.21x = 200,963,332.86
  5. Step 5: Solve for x
    x = 200,963,332.86/15,467.21
  6. Step 6: Final answer
    x = 12,992.86

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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.