Home / 19,315.56-28,900.44-12,749.70

Finding the Fourth Proportional to 19,315.56, 28,900.44 and 12,749.70

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Solution

The fourth proportional to 19,315.56, 28,900.44 and 12,749.70 is: 19,076.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,315.56 : 28,900.44 = 12,749.70 : x
  2. Step 2: Convert to fraction form
    19,315.56/28,900.44 = 12,749.70/x
  3. Step 3: Cross multiply
    19,315.56x = 28,900.44 × 12,749.70
  4. Step 4: Simplify right side
    19,315.56x = 368,471,939.87
  5. Step 5: Solve for x
    x = 368,471,939.87/19,315.56
  6. Step 6: Final answer
    x = 19,076.43

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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.