Home / 20,804.75-31,207.04-9,705.27

Finding the Fourth Proportional to 20,804.75, 31,207.04 and 9,705.27

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Solution

The fourth proportional to 20,804.75, 31,207.04 and 9,705.27 is: 14,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.75 : 31,207.04 = 9,705.27 : x
  2. Step 2: Convert to fraction form
    20,804.75/31,207.04 = 9,705.27/x
  3. Step 3: Cross multiply
    20,804.75x = 31,207.04 × 9,705.27
  4. Step 4: Simplify right side
    20,804.75x = 302,872,700.57
  5. Step 5: Solve for x
    x = 302,872,700.57/20,804.75
  6. Step 6: Final answer
    x = 14,557.87

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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.