Home / 13,638.32-20,448.38-11,009.06

Finding the Fourth Proportional to 13,638.32, 20,448.38 and 11,009.06

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Solution

The fourth proportional to 13,638.32, 20,448.38 and 11,009.06 is: 16,506.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.32 : 20,448.38 = 11,009.06 : x
  2. Step 2: Convert to fraction form
    13,638.32/20,448.38 = 11,009.06/x
  3. Step 3: Cross multiply
    13,638.32x = 20,448.38 × 11,009.06
  4. Step 4: Simplify right side
    13,638.32x = 225,117,442.32
  5. Step 5: Solve for x
    x = 225,117,442.32/13,638.32
  6. Step 6: Final answer
    x = 16,506.24

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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.