Home / 20,723.09-28,597.46-12,765.11

Finding the Fourth Proportional to 20,723.09, 28,597.46 and 12,765.11

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Solution

The fourth proportional to 20,723.09, 28,597.46 and 12,765.11 is: 17,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.09 : 28,597.46 = 12,765.11 : x
  2. Step 2: Convert to fraction form
    20,723.09/28,597.46 = 12,765.11/x
  3. Step 3: Cross multiply
    20,723.09x = 28,597.46 × 12,765.11
  4. Step 4: Simplify right side
    20,723.09x = 365,049,515.81
  5. Step 5: Solve for x
    x = 365,049,515.81/20,723.09
  6. Step 6: Final answer
    x = 17,615.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.