Home / 13,410.79-18,441.27-11,639.32

Finding the Fourth Proportional to 13,410.79, 18,441.27 and 11,639.32

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Solution

The fourth proportional to 13,410.79, 18,441.27 and 11,639.32 is: 16,005.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.79 : 18,441.27 = 11,639.32 : x
  2. Step 2: Convert to fraction form
    13,410.79/18,441.27 = 11,639.32/x
  3. Step 3: Cross multiply
    13,410.79x = 18,441.27 × 11,639.32
  4. Step 4: Simplify right side
    13,410.79x = 214,643,842.74
  5. Step 5: Solve for x
    x = 214,643,842.74/13,410.79
  6. Step 6: Final answer
    x = 16,005.31

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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.