Home / 20,758.42-28,647.48-11,807.50

Finding the Fourth Proportional to 20,758.42, 28,647.48 and 11,807.50

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Solution

The fourth proportional to 20,758.42, 28,647.48 and 11,807.50 is: 16,294.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.42 : 28,647.48 = 11,807.50 : x
  2. Step 2: Convert to fraction form
    20,758.42/28,647.48 = 11,807.50/x
  3. Step 3: Cross multiply
    20,758.42x = 28,647.48 × 11,807.50
  4. Step 4: Simplify right side
    20,758.42x = 338,255,120.10
  5. Step 5: Solve for x
    x = 338,255,120.10/20,758.42
  6. Step 6: Final answer
    x = 16,294.84

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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.