Home / 13,599.75-20,402.55-4,239.57

Finding the Fourth Proportional to 13,599.75, 20,402.55 and 4,239.57

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Solution

The fourth proportional to 13,599.75, 20,402.55 and 4,239.57 is: 6,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.75 : 20,402.55 = 4,239.57 : x
  2. Step 2: Convert to fraction form
    13,599.75/20,402.55 = 4,239.57/x
  3. Step 3: Cross multiply
    13,599.75x = 20,402.55 × 4,239.57
  4. Step 4: Simplify right side
    13,599.75x = 86,498,038.90
  5. Step 5: Solve for x
    x = 86,498,038.90/13,599.75
  6. Step 6: Final answer
    x = 6,360.27

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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.