Home / 13,017.60-19,520.64-3,784.32

Finding the Fourth Proportional to 13,017.60, 19,520.64 and 3,784.32

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Solution

The fourth proportional to 13,017.60, 19,520.64 and 3,784.32 is: 5,674.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,017.60 : 19,520.64 = 3,784.32 : x
  2. Step 2: Convert to fraction form
    13,017.60/19,520.64 = 3,784.32/x
  3. Step 3: Cross multiply
    13,017.60x = 19,520.64 × 3,784.32
  4. Step 4: Simplify right side
    13,017.60x = 73,872,348.36
  5. Step 5: Solve for x
    x = 73,872,348.36/13,017.60
  6. Step 6: Final answer
    x = 5,674.81

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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.