Home / 14,087.79-19,440.51-8,120.34

Finding the Fourth Proportional to 14,087.79, 19,440.51 and 8,120.34

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Solution

The fourth proportional to 14,087.79, 19,440.51 and 8,120.34 is: 11,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,087.79 : 19,440.51 = 8,120.34 : x
  2. Step 2: Convert to fraction form
    14,087.79/19,440.51 = 8,120.34/x
  3. Step 3: Cross multiply
    14,087.79x = 19,440.51 × 8,120.34
  4. Step 4: Simplify right side
    14,087.79x = 157,863,550.97
  5. Step 5: Solve for x
    x = 157,863,550.97/14,087.79
  6. Step 6: Final answer
    x = 11,205.70

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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.