Home / 20,700.96-28,567.08-11,748.72

Finding the Fourth Proportional to 20,700.96, 28,567.08 and 11,748.72

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Solution

The fourth proportional to 20,700.96, 28,567.08 and 11,748.72 is: 16,213.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.96 : 28,567.08 = 11,748.72 : x
  2. Step 2: Convert to fraction form
    20,700.96/28,567.08 = 11,748.72/x
  3. Step 3: Cross multiply
    20,700.96x = 28,567.08 × 11,748.72
  4. Step 4: Simplify right side
    20,700.96x = 335,626,624.14
  5. Step 5: Solve for x
    x = 335,626,624.14/20,700.96
  6. Step 6: Final answer
    x = 16,213.09

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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.