Home / 13,929.43-19,222.70-7,961.32

Finding the Fourth Proportional to 13,929.43, 19,222.70 and 7,961.32

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Solution

The fourth proportional to 13,929.43, 19,222.70 and 7,961.32 is: 10,986.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.43 : 19,222.70 = 7,961.32 : x
  2. Step 2: Convert to fraction form
    13,929.43/19,222.70 = 7,961.32/x
  3. Step 3: Cross multiply
    13,929.43x = 19,222.70 × 7,961.32
  4. Step 4: Simplify right side
    13,929.43x = 153,038,065.96
  5. Step 5: Solve for x
    x = 153,038,065.96/13,929.43
  6. Step 6: Final answer
    x = 10,986.67

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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.