Home / 13,688.51-20,567.37-13,134.93

Finding the Fourth Proportional to 13,688.51, 20,567.37 and 13,134.93

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Solution

The fourth proportional to 13,688.51, 20,567.37 and 13,134.93 is: 19,735.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.51 : 20,567.37 = 13,134.93 : x
  2. Step 2: Convert to fraction form
    13,688.51/20,567.37 = 13,134.93/x
  3. Step 3: Cross multiply
    13,688.51x = 20,567.37 × 13,134.93
  4. Step 4: Simplify right side
    13,688.51x = 270,150,932.40
  5. Step 5: Solve for x
    x = 270,150,932.40/13,688.51
  6. Step 6: Final answer
    x = 19,735.59

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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.