Home / 13,608.94-20,421.29-5,710.75

Finding the Fourth Proportional to 13,608.94, 20,421.29 and 5,710.75

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Solution

The fourth proportional to 13,608.94, 20,421.29 and 5,710.75 is: 8,569.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.94 : 20,421.29 = 5,710.75 : x
  2. Step 2: Convert to fraction form
    13,608.94/20,421.29 = 5,710.75/x
  3. Step 3: Cross multiply
    13,608.94x = 20,421.29 × 5,710.75
  4. Step 4: Simplify right side
    13,608.94x = 116,620,881.87
  5. Step 5: Solve for x
    x = 116,620,881.87/13,608.94
  6. Step 6: Final answer
    x = 8,569.43

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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.