Home / 13,739.60-18,970.25-12,133.95

Finding the Fourth Proportional to 13,739.60, 18,970.25 and 12,133.95

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Solution

The fourth proportional to 13,739.60, 18,970.25 and 12,133.95 is: 16,753.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.60 : 18,970.25 = 12,133.95 : x
  2. Step 2: Convert to fraction form
    13,739.60/18,970.25 = 12,133.95/x
  3. Step 3: Cross multiply
    13,739.60x = 18,970.25 × 12,133.95
  4. Step 4: Simplify right side
    13,739.60x = 230,184,004.32
  5. Step 5: Solve for x
    x = 230,184,004.32/13,739.60
  6. Step 6: Final answer
    x = 16,753.33

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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.