Home / 13,760.78-20,639.40-4,401.77

Finding the Fourth Proportional to 13,760.78, 20,639.40 and 4,401.77

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Solution

The fourth proportional to 13,760.78, 20,639.40 and 4,401.77 is: 6,602.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.78 : 20,639.40 = 4,401.77 : x
  2. Step 2: Convert to fraction form
    13,760.78/20,639.40 = 4,401.77/x
  3. Step 3: Cross multiply
    13,760.78x = 20,639.40 × 4,401.77
  4. Step 4: Simplify right side
    13,760.78x = 90,849,788.54
  5. Step 5: Solve for x
    x = 90,849,788.54/13,760.78
  6. Step 6: Final answer
    x = 6,602.08

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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.