Home / 19,138.24-28,706.56-6,661.12

Finding the Fourth Proportional to 19,138.24, 28,706.56 and 6,661.12

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Solution

The fourth proportional to 19,138.24, 28,706.56 and 6,661.12 is: 9,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.24 : 28,706.56 = 6,661.12 : x
  2. Step 2: Convert to fraction form
    19,138.24/28,706.56 = 6,661.12/x
  3. Step 3: Cross multiply
    19,138.24x = 28,706.56 × 6,661.12
  4. Step 4: Simplify right side
    19,138.24x = 191,217,840.95
  5. Step 5: Solve for x
    x = 191,217,840.95/19,138.24
  6. Step 6: Final answer
    x = 9,991.40

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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.