Home / 13,602.15-20,401.32-4,239.99

Finding the Fourth Proportional to 13,602.15, 20,401.32 and 4,239.99

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Solution

The fourth proportional to 13,602.15, 20,401.32 and 4,239.99 is: 6,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.15 : 20,401.32 = 4,239.99 : x
  2. Step 2: Convert to fraction form
    13,602.15/20,401.32 = 4,239.99/x
  3. Step 3: Cross multiply
    13,602.15x = 20,401.32 × 4,239.99
  4. Step 4: Simplify right side
    13,602.15x = 86,501,392.79
  5. Step 5: Solve for x
    x = 86,501,392.79/13,602.15
  6. Step 6: Final answer
    x = 6,359.39

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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.