Home / 20,588.12-28,411.48-11,638.52

Finding the Fourth Proportional to 20,588.12, 28,411.48 and 11,638.52

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Solution

The fourth proportional to 20,588.12, 28,411.48 and 11,638.52 is: 16,061.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.12 : 28,411.48 = 11,638.52 : x
  2. Step 2: Convert to fraction form
    20,588.12/28,411.48 = 11,638.52/x
  3. Step 3: Cross multiply
    20,588.12x = 28,411.48 × 11,638.52
  4. Step 4: Simplify right side
    20,588.12x = 330,667,578.21
  5. Step 5: Solve for x
    x = 330,667,578.21/20,588.12
  6. Step 6: Final answer
    x = 16,061.09

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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.