Home / 23,078.21-31,847.97-13,389.55

Finding the Fourth Proportional to 23,078.21, 31,847.97 and 13,389.55

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Solution

The fourth proportional to 23,078.21, 31,847.97 and 13,389.55 is: 18,477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,078.21 : 31,847.97 = 13,389.55 : x
  2. Step 2: Convert to fraction form
    23,078.21/31,847.97 = 13,389.55/x
  3. Step 3: Cross multiply
    23,078.21x = 31,847.97 × 13,389.55
  4. Step 4: Simplify right side
    23,078.21x = 426,429,827.47
  5. Step 5: Solve for x
    x = 426,429,827.47/23,078.21
  6. Step 6: Final answer
    x = 18,477.60

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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.