Home / 20,447.87-30,671.69-5,656.77

Finding the Fourth Proportional to 20,447.87, 30,671.69 and 5,656.77

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Solution

The fourth proportional to 20,447.87, 30,671.69 and 5,656.77 is: 8,485.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.87 : 30,671.69 = 5,656.77 : x
  2. Step 2: Convert to fraction form
    20,447.87/30,671.69 = 5,656.77/x
  3. Step 3: Cross multiply
    20,447.87x = 30,671.69 × 5,656.77
  4. Step 4: Simplify right side
    20,447.87x = 173,502,667.56
  5. Step 5: Solve for x
    x = 173,502,667.56/20,447.87
  6. Step 6: Final answer
    x = 8,485.12

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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.