Home / 13,639.74-20,453.13-4,403.58

Finding the Fourth Proportional to 13,639.74, 20,453.13 and 4,403.58

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Solution

The fourth proportional to 13,639.74, 20,453.13 and 4,403.58 is: 6,603.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.74 : 20,453.13 = 4,403.58 : x
  2. Step 2: Convert to fraction form
    13,639.74/20,453.13 = 4,403.58/x
  3. Step 3: Cross multiply
    13,639.74x = 20,453.13 × 4,403.58
  4. Step 4: Simplify right side
    13,639.74x = 90,066,994.21
  5. Step 5: Solve for x
    x = 90,066,994.21/13,639.74
  6. Step 6: Final answer
    x = 6,603.28

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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.