Home / 20,447.40-30,671.10-7,314.60

Finding the Fourth Proportional to 20,447.40, 30,671.10 and 7,314.60

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Solution

The fourth proportional to 20,447.40, 30,671.10 and 7,314.60 is: 10,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.40 : 30,671.10 = 7,314.60 : x
  2. Step 2: Convert to fraction form
    20,447.40/30,671.10 = 7,314.60/x
  3. Step 3: Cross multiply
    20,447.40x = 30,671.10 × 7,314.60
  4. Step 4: Simplify right side
    20,447.40x = 224,346,828.06
  5. Step 5: Solve for x
    x = 224,346,828.06/20,447.40
  6. Step 6: Final answer
    x = 10,971.90

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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.