Home / 13,679.23-18,877.35-7,391.60

Finding the Fourth Proportional to 13,679.23, 18,877.35 and 7,391.60

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Solution

The fourth proportional to 13,679.23, 18,877.35 and 7,391.60 is: 10,200.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.23 : 18,877.35 = 7,391.60 : x
  2. Step 2: Convert to fraction form
    13,679.23/18,877.35 = 7,391.60/x
  3. Step 3: Cross multiply
    13,679.23x = 18,877.35 × 7,391.60
  4. Step 4: Simplify right side
    13,679.23x = 139,533,830.50
  5. Step 5: Solve for x
    x = 139,533,830.50/13,679.23
  6. Step 6: Final answer
    x = 10,200.42

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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.