Home / 12,923.40-19,368.36-8,538.60

Finding the Fourth Proportional to 12,923.40, 19,368.36 and 8,538.60

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Solution

The fourth proportional to 12,923.40, 19,368.36 and 8,538.60 is: 12,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,923.40 : 19,368.36 = 8,538.60 : x
  2. Step 2: Convert to fraction form
    12,923.40/19,368.36 = 8,538.60/x
  3. Step 3: Cross multiply
    12,923.40x = 19,368.36 × 8,538.60
  4. Step 4: Simplify right side
    12,923.40x = 165,378,678.70
  5. Step 5: Solve for x
    x = 165,378,678.70/12,923.40
  6. Step 6: Final answer
    x = 12,796.84

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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.