Home / 20,977.79-31,457.26-6,181.52

Finding the Fourth Proportional to 20,977.79, 31,457.26 and 6,181.52

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Solution

The fourth proportional to 20,977.79, 31,457.26 and 6,181.52 is: 9,269.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.79 : 31,457.26 = 6,181.52 : x
  2. Step 2: Convert to fraction form
    20,977.79/31,457.26 = 6,181.52/x
  3. Step 3: Cross multiply
    20,977.79x = 31,457.26 × 6,181.52
  4. Step 4: Simplify right side
    20,977.79x = 194,453,532.28
  5. Step 5: Solve for x
    x = 194,453,532.28/20,977.79
  6. Step 6: Final answer
    x = 9,269.50

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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.