Home / 13,620.42-18,784.68-11,506.32

Finding the Fourth Proportional to 13,620.42, 18,784.68 and 11,506.32

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Solution

The fourth proportional to 13,620.42, 18,784.68 and 11,506.32 is: 15,869.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.42 : 18,784.68 = 11,506.32 : x
  2. Step 2: Convert to fraction form
    13,620.42/18,784.68 = 11,506.32/x
  3. Step 3: Cross multiply
    13,620.42x = 18,784.68 × 11,506.32
  4. Step 4: Simplify right side
    13,620.42x = 216,142,539.18
  5. Step 5: Solve for x
    x = 216,142,539.18/13,620.42
  6. Step 6: Final answer
    x = 15,869.01

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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.