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Finding the Fourth Proportional to 13,953.98, 20,945.56 and 8,763.50

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Solution

The fourth proportional to 13,953.98, 20,945.56 and 8,763.50 is: 13,154.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.98 : 20,945.56 = 8,763.50 : x
  2. Step 2: Convert to fraction form
    13,953.98/20,945.56 = 8,763.50/x
  3. Step 3: Cross multiply
    13,953.98x = 20,945.56 × 8,763.50
  4. Step 4: Simplify right side
    13,953.98x = 183,556,415.06
  5. Step 5: Solve for x
    x = 183,556,415.06/13,953.98
  6. Step 6: Final answer
    x = 13,154.41

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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.