Home / 18,973.40-28,468.20-9,107.60

Finding the Fourth Proportional to 18,973.40, 28,468.20 and 9,107.60

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Solution

The fourth proportional to 18,973.40, 28,468.20 and 9,107.60 is: 13,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.40 : 28,468.20 = 9,107.60 : x
  2. Step 2: Convert to fraction form
    18,973.40/28,468.20 = 9,107.60/x
  3. Step 3: Cross multiply
    18,973.40x = 28,468.20 × 9,107.60
  4. Step 4: Simplify right side
    18,973.40x = 259,276,978.32
  5. Step 5: Solve for x
    x = 259,276,978.32/18,973.40
  6. Step 6: Final answer
    x = 13,665.29

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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.