Home / 13,889.40-19,167.46-8,223.88

Finding the Fourth Proportional to 13,889.40, 19,167.46 and 8,223.88

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Solution

The fourth proportional to 13,889.40, 19,167.46 and 8,223.88 is: 11,349.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.40 : 19,167.46 = 8,223.88 : x
  2. Step 2: Convert to fraction form
    13,889.40/19,167.46 = 8,223.88/x
  3. Step 3: Cross multiply
    13,889.40x = 19,167.46 × 8,223.88
  4. Step 4: Simplify right side
    13,889.40x = 157,630,890.94
  5. Step 5: Solve for x
    x = 157,630,890.94/13,889.40
  6. Step 6: Final answer
    x = 11,349.01

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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.