Home / 21,311.76-31,969.44-5,730.24

Finding the Fourth Proportional to 21,311.76, 31,969.44 and 5,730.24

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Solution

The fourth proportional to 21,311.76, 31,969.44 and 5,730.24 is: 8,595.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.76 : 31,969.44 = 5,730.24 : x
  2. Step 2: Convert to fraction form
    21,311.76/31,969.44 = 5,730.24/x
  3. Step 3: Cross multiply
    21,311.76x = 31,969.44 × 5,730.24
  4. Step 4: Simplify right side
    21,311.76x = 183,192,563.87
  5. Step 5: Solve for x
    x = 183,192,563.87/21,311.76
  6. Step 6: Final answer
    x = 8,595.84

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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.