Home / 19,117.24-28,615.78-12,072.90

Finding the Fourth Proportional to 19,117.24, 28,615.78 and 12,072.90

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Solution

The fourth proportional to 19,117.24, 28,615.78 and 12,072.90 is: 18,071.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.24 : 28,615.78 = 12,072.90 : x
  2. Step 2: Convert to fraction form
    19,117.24/28,615.78 = 12,072.90/x
  3. Step 3: Cross multiply
    19,117.24x = 28,615.78 × 12,072.90
  4. Step 4: Simplify right side
    19,117.24x = 345,475,450.36
  5. Step 5: Solve for x
    x = 345,475,450.36/19,117.24
  6. Step 6: Final answer
    x = 18,071.41

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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.