Home / 14,040.86-19,378.06-8,072.78

Finding the Fourth Proportional to 14,040.86, 19,378.06 and 8,072.78

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Solution

The fourth proportional to 14,040.86, 19,378.06 and 8,072.78 is: 11,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,040.86 : 19,378.06 = 8,072.78 : x
  2. Step 2: Convert to fraction form
    14,040.86/19,378.06 = 8,072.78/x
  3. Step 3: Cross multiply
    14,040.86x = 19,378.06 × 8,072.78
  4. Step 4: Simplify right side
    14,040.86x = 156,434,774.84
  5. Step 5: Solve for x
    x = 156,434,774.84/14,040.86
  6. Step 6: Final answer
    x = 11,141.40

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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.