Home / 20,313.18-28,032.48-11,361.06

Finding the Fourth Proportional to 20,313.18, 28,032.48 and 11,361.06

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Solution

The fourth proportional to 20,313.18, 28,032.48 and 11,361.06 is: 15,678.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.18 : 28,032.48 = 11,361.06 : x
  2. Step 2: Convert to fraction form
    20,313.18/28,032.48 = 11,361.06/x
  3. Step 3: Cross multiply
    20,313.18x = 28,032.48 × 11,361.06
  4. Step 4: Simplify right side
    20,313.18x = 318,478,687.23
  5. Step 5: Solve for x
    x = 318,478,687.23/20,313.18
  6. Step 6: Final answer
    x = 15,678.43

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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.