Home / 13,569.63-20,221.19-13,123.68

Finding the Fourth Proportional to 13,569.63, 20,221.19 and 13,123.68

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Solution

The fourth proportional to 13,569.63, 20,221.19 and 13,123.68 is: 19,556.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.63 : 20,221.19 = 13,123.68 : x
  2. Step 2: Convert to fraction form
    13,569.63/20,221.19 = 13,123.68/x
  3. Step 3: Cross multiply
    13,569.63x = 20,221.19 × 13,123.68
  4. Step 4: Simplify right side
    13,569.63x = 265,376,361.16
  5. Step 5: Solve for x
    x = 265,376,361.16/13,569.63
  6. Step 6: Final answer
    x = 19,556.64

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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.