Home / 13,838.19-20,722.58-8,551.47

Finding the Fourth Proportional to 13,838.19, 20,722.58 and 8,551.47

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Solution

The fourth proportional to 13,838.19, 20,722.58 and 8,551.47 is: 12,805.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,838.19 : 20,722.58 = 8,551.47 : x
  2. Step 2: Convert to fraction form
    13,838.19/20,722.58 = 8,551.47/x
  3. Step 3: Cross multiply
    13,838.19x = 20,722.58 × 8,551.47
  4. Step 4: Simplify right side
    13,838.19x = 177,208,636.31
  5. Step 5: Solve for x
    x = 177,208,636.31/13,838.19
  6. Step 6: Final answer
    x = 12,805.77

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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.