Home / 14,138.40-19,469.52-12,955.68

Finding the Fourth Proportional to 14,138.40, 19,469.52 and 12,955.68

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Solution

The fourth proportional to 14,138.40, 19,469.52 and 12,955.68 is: 17,840.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.40 : 19,469.52 = 12,955.68 : x
  2. Step 2: Convert to fraction form
    14,138.40/19,469.52 = 12,955.68/x
  3. Step 3: Cross multiply
    14,138.40x = 19,469.52 × 12,955.68
  4. Step 4: Simplify right side
    14,138.40x = 252,240,870.87
  5. Step 5: Solve for x
    x = 252,240,870.87/14,138.40
  6. Step 6: Final answer
    x = 17,840.84

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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.