Home / 20,556.48-30,821.76-11,328.96

Finding the Fourth Proportional to 20,556.48, 30,821.76 and 11,328.96

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Solution

The fourth proportional to 20,556.48, 30,821.76 and 11,328.96 is: 16,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.48 : 30,821.76 = 11,328.96 : x
  2. Step 2: Convert to fraction form
    20,556.48/30,821.76 = 11,328.96/x
  3. Step 3: Cross multiply
    20,556.48x = 30,821.76 × 11,328.96
  4. Step 4: Simplify right side
    20,556.48x = 349,178,486.17
  5. Step 5: Solve for x
    x = 349,178,486.17/20,556.48
  6. Step 6: Final answer
    x = 16,986.30

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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.