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Finding the Fourth Proportional to 20,647.48, 30,959.88 and 9,548.05

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Solution

The fourth proportional to 20,647.48, 30,959.88 and 9,548.05 is: 14,316.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.48 : 30,959.88 = 9,548.05 : x
  2. Step 2: Convert to fraction form
    20,647.48/30,959.88 = 9,548.05/x
  3. Step 3: Cross multiply
    20,647.48x = 30,959.88 × 9,548.05
  4. Step 4: Simplify right side
    20,647.48x = 295,606,482.23
  5. Step 5: Solve for x
    x = 295,606,482.23/20,647.48
  6. Step 6: Final answer
    x = 14,316.83

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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.