Home / 20,361.04-28,097.76-11,978.08

Finding the Fourth Proportional to 20,361.04, 28,097.76 and 11,978.08

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Solution

The fourth proportional to 20,361.04, 28,097.76 and 11,978.08 is: 16,529.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.04 : 28,097.76 = 11,978.08 : x
  2. Step 2: Convert to fraction form
    20,361.04/28,097.76 = 11,978.08/x
  3. Step 3: Cross multiply
    20,361.04x = 28,097.76 × 11,978.08
  4. Step 4: Simplify right side
    20,361.04x = 336,557,217.10
  5. Step 5: Solve for x
    x = 336,557,217.10/20,361.04
  6. Step 6: Final answer
    x = 16,529.47

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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.