Home / 20,715.60-31,056.39-8,230.26

Finding the Fourth Proportional to 20,715.60, 31,056.39 and 8,230.26

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Solution

The fourth proportional to 20,715.60, 31,056.39 and 8,230.26 is: 12,338.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.60 : 31,056.39 = 8,230.26 : x
  2. Step 2: Convert to fraction form
    20,715.60/31,056.39 = 8,230.26/x
  3. Step 3: Cross multiply
    20,715.60x = 31,056.39 × 8,230.26
  4. Step 4: Simplify right side
    20,715.60x = 255,602,164.36
  5. Step 5: Solve for x
    x = 255,602,164.36/20,715.60
  6. Step 6: Final answer
    x = 12,338.63

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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.