Home / 13,361.80-18,421.14-11,262.28

Finding the Fourth Proportional to 13,361.80, 18,421.14 and 11,262.28

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Solution

The fourth proportional to 13,361.80, 18,421.14 and 11,262.28 is: 15,526.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.80 : 18,421.14 = 11,262.28 : x
  2. Step 2: Convert to fraction form
    13,361.80/18,421.14 = 11,262.28/x
  3. Step 3: Cross multiply
    13,361.80x = 18,421.14 × 11,262.28
  4. Step 4: Simplify right side
    13,361.80x = 207,464,036.60
  5. Step 5: Solve for x
    x = 207,464,036.60/13,361.80
  6. Step 6: Final answer
    x = 15,526.65

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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.