Home / 21,120.09-31,675.55-6,325.04

Finding the Fourth Proportional to 21,120.09, 31,675.55 and 6,325.04

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Solution

The fourth proportional to 21,120.09, 31,675.55 and 6,325.04 is: 9,486.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120.09 : 31,675.55 = 6,325.04 : x
  2. Step 2: Convert to fraction form
    21,120.09/31,675.55 = 6,325.04/x
  3. Step 3: Cross multiply
    21,120.09x = 31,675.55 × 6,325.04
  4. Step 4: Simplify right side
    21,120.09x = 200,348,930.77
  5. Step 5: Solve for x
    x = 200,348,930.77/21,120.09
  6. Step 6: Final answer
    x = 9,486.18

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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.