Home / 20,840.66-28,758.28-11,765.53

Finding the Fourth Proportional to 20,840.66, 28,758.28 and 11,765.53

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Solution

The fourth proportional to 20,840.66, 28,758.28 and 11,765.53 is: 16,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.66 : 28,758.28 = 11,765.53 : x
  2. Step 2: Convert to fraction form
    20,840.66/28,758.28 = 11,765.53/x
  3. Step 3: Cross multiply
    20,840.66x = 28,758.28 × 11,765.53
  4. Step 4: Simplify right side
    20,840.66x = 338,356,406.09
  5. Step 5: Solve for x
    x = 338,356,406.09/20,840.66
  6. Step 6: Final answer
    x = 16,235.40

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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.