Home / 13,638.34-20,448.36-11,009.08

Finding the Fourth Proportional to 13,638.34, 20,448.36 and 11,009.08

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Solution

The fourth proportional to 13,638.34, 20,448.36 and 11,009.08 is: 16,506.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.34 : 20,448.36 = 11,009.08 : x
  2. Step 2: Convert to fraction form
    13,638.34/20,448.36 = 11,009.08/x
  3. Step 3: Cross multiply
    13,638.34x = 20,448.36 × 11,009.08
  4. Step 4: Simplify right side
    13,638.34x = 225,117,631.11
  5. Step 5: Solve for x
    x = 225,117,631.11/13,638.34
  6. Step 6: Final answer
    x = 16,506.23

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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.