Home / 20,700.87-28,567.94-11,748.75

Finding the Fourth Proportional to 20,700.87, 28,567.94 and 11,748.75

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Solution

The fourth proportional to 20,700.87, 28,567.94 and 11,748.75 is: 16,213.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.87 : 28,567.94 = 11,748.75 : x
  2. Step 2: Convert to fraction form
    20,700.87/28,567.94 = 11,748.75/x
  3. Step 3: Cross multiply
    20,700.87x = 28,567.94 × 11,748.75
  4. Step 4: Simplify right side
    20,700.87x = 335,637,526.33
  5. Step 5: Solve for x
    x = 335,637,526.33/20,700.87
  6. Step 6: Final answer
    x = 16,213.69

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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.