Home / 20,817.12-31,235.93-9,722.19

Finding the Fourth Proportional to 20,817.12, 31,235.93 and 9,722.19

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Solution

The fourth proportional to 20,817.12, 31,235.93 and 9,722.19 is: 14,588.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.12 : 31,235.93 = 9,722.19 : x
  2. Step 2: Convert to fraction form
    20,817.12/31,235.93 = 9,722.19/x
  3. Step 3: Cross multiply
    20,817.12x = 31,235.93 × 9,722.19
  4. Step 4: Simplify right side
    20,817.12x = 303,681,597.68
  5. Step 5: Solve for x
    x = 303,681,597.68/20,817.12
  6. Step 6: Final answer
    x = 14,588.07

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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.