Home / 21,240.18-31,858.21-6,449.23

Finding the Fourth Proportional to 21,240.18, 31,858.21 and 6,449.23

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Solution

The fourth proportional to 21,240.18, 31,858.21 and 6,449.23 is: 9,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.18 : 31,858.21 = 6,449.23 : x
  2. Step 2: Convert to fraction form
    21,240.18/31,858.21 = 6,449.23/x
  3. Step 3: Cross multiply
    21,240.18x = 31,858.21 × 6,449.23
  4. Step 4: Simplify right side
    21,240.18x = 205,460,814.76
  5. Step 5: Solve for x
    x = 205,460,814.76/21,240.18
  6. Step 6: Final answer
    x = 9,673.21

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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.