Home / 20,699.64-31,023.43-11,211.59

Finding the Fourth Proportional to 20,699.64, 31,023.43 and 11,211.59

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Solution

The fourth proportional to 20,699.64, 31,023.43 and 11,211.59 is: 16,803.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.64 : 31,023.43 = 11,211.59 : x
  2. Step 2: Convert to fraction form
    20,699.64/31,023.43 = 11,211.59/x
  3. Step 3: Cross multiply
    20,699.64x = 31,023.43 × 11,211.59
  4. Step 4: Simplify right side
    20,699.64x = 347,821,852.58
  5. Step 5: Solve for x
    x = 347,821,852.58/20,699.64
  6. Step 6: Final answer
    x = 16,803.28

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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.