Home / 20,281.21-30,421.69-8,273.32

Finding the Fourth Proportional to 20,281.21, 30,421.69 and 8,273.32

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Solution

The fourth proportional to 20,281.21, 30,421.69 and 8,273.32 is: 12,409.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.21 : 30,421.69 = 8,273.32 : x
  2. Step 2: Convert to fraction form
    20,281.21/30,421.69 = 8,273.32/x
  3. Step 3: Cross multiply
    20,281.21x = 30,421.69 × 8,273.32
  4. Step 4: Simplify right side
    20,281.21x = 251,688,376.31
  5. Step 5: Solve for x
    x = 251,688,376.31/20,281.21
  6. Step 6: Final answer
    x = 12,409.93

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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.