Home / 13,889.85-19,169.51-8,858.67

Finding the Fourth Proportional to 13,889.85, 19,169.51 and 8,858.67

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Solution

The fourth proportional to 13,889.85, 19,169.51 and 8,858.67 is: 12,225.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.85 : 19,169.51 = 8,858.67 : x
  2. Step 2: Convert to fraction form
    13,889.85/19,169.51 = 8,858.67/x
  3. Step 3: Cross multiply
    13,889.85x = 19,169.51 × 8,858.67
  4. Step 4: Simplify right side
    13,889.85x = 169,816,318.86
  5. Step 5: Solve for x
    x = 169,816,318.86/13,889.85
  6. Step 6: Final answer
    x = 12,225.93

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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.