Home / 20,435.00-28,180.66-13,262.28

Finding the Fourth Proportional to 20,435.00, 28,180.66 and 13,262.28

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Solution

The fourth proportional to 20,435.00, 28,180.66 and 13,262.28 is: 18,289.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.00 : 28,180.66 = 13,262.28 : x
  2. Step 2: Convert to fraction form
    20,435.00/28,180.66 = 13,262.28/x
  3. Step 3: Cross multiply
    20,435.00x = 28,180.66 × 13,262.28
  4. Step 4: Simplify right side
    20,435.00x = 373,739,848.05
  5. Step 5: Solve for x
    x = 373,739,848.05/20,435.00
  6. Step 6: Final answer
    x = 18,289.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.