Home / 13,638.16-20,461.38-6,707.80

Finding the Fourth Proportional to 13,638.16, 20,461.38 and 6,707.80

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Solution

The fourth proportional to 13,638.16, 20,461.38 and 6,707.80 is: 10,063.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.16 : 20,461.38 = 6,707.80 : x
  2. Step 2: Convert to fraction form
    13,638.16/20,461.38 = 6,707.80/x
  3. Step 3: Cross multiply
    13,638.16x = 20,461.38 × 6,707.80
  4. Step 4: Simplify right side
    13,638.16x = 137,250,844.76
  5. Step 5: Solve for x
    x = 137,250,844.76/13,638.16
  6. Step 6: Final answer
    x = 10,063.74

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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.