Home / 20,667.65-28,520.08-11,592.51

Finding the Fourth Proportional to 20,667.65, 28,520.08 and 11,592.51

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Solution

The fourth proportional to 20,667.65, 28,520.08 and 11,592.51 is: 15,996.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.65 : 28,520.08 = 11,592.51 : x
  2. Step 2: Convert to fraction form
    20,667.65/28,520.08 = 11,592.51/x
  3. Step 3: Cross multiply
    20,667.65x = 28,520.08 × 11,592.51
  4. Step 4: Simplify right side
    20,667.65x = 330,619,383.90
  5. Step 5: Solve for x
    x = 330,619,383.90/20,667.65
  6. Step 6: Final answer
    x = 15,996.95

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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.