Home / 13,698.24-20,531.16-12,123.60

Finding the Fourth Proportional to 13,698.24, 20,531.16 and 12,123.60

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Solution

The fourth proportional to 13,698.24, 20,531.16 and 12,123.60 is: 18,171.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.24 : 20,531.16 = 12,123.60 : x
  2. Step 2: Convert to fraction form
    13,698.24/20,531.16 = 12,123.60/x
  3. Step 3: Cross multiply
    13,698.24x = 20,531.16 × 12,123.60
  4. Step 4: Simplify right side
    13,698.24x = 248,911,571.38
  5. Step 5: Solve for x
    x = 248,911,571.38/13,698.24
  6. Step 6: Final answer
    x = 18,171.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.