Home / 28,112.64-42,164.64-9,406.08

Finding the Fourth Proportional to 28,112.64, 42,164.64 and 9,406.08

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Solution

The fourth proportional to 28,112.64, 42,164.64 and 9,406.08 is: 14,107.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.64 : 42,164.64 = 9,406.08 : x
  2. Step 2: Convert to fraction form
    28,112.64/42,164.64 = 9,406.08/x
  3. Step 3: Cross multiply
    28,112.64x = 42,164.64 × 9,406.08
  4. Step 4: Simplify right side
    28,112.64x = 396,603,977.01
  5. Step 5: Solve for x
    x = 396,603,977.01/28,112.64
  6. Step 6: Final answer
    x = 14,107.67

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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.