Home / 13,568.63-20,219.70-13,122.68

Finding the Fourth Proportional to 13,568.63, 20,219.70 and 13,122.68

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Solution

The fourth proportional to 13,568.63, 20,219.70 and 13,122.68 is: 19,555.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.63 : 20,219.70 = 13,122.68 : x
  2. Step 2: Convert to fraction form
    13,568.63/20,219.70 = 13,122.68/x
  3. Step 3: Cross multiply
    13,568.63x = 20,219.70 × 13,122.68
  4. Step 4: Simplify right side
    13,568.63x = 265,336,587.18
  5. Step 5: Solve for x
    x = 265,336,587.18/13,568.63
  6. Step 6: Final answer
    x = 19,555.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.