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Finding the Fourth Proportional to 28,011.57, 41,985.57 and 17,486.29

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Solution

The fourth proportional to 28,011.57, 41,985.57 and 17,486.29 is: 26,209.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.57 : 41,985.57 = 17,486.29 : x
  2. Step 2: Convert to fraction form
    28,011.57/41,985.57 = 17,486.29/x
  3. Step 3: Cross multiply
    28,011.57x = 41,985.57 × 17,486.29
  4. Step 4: Simplify right side
    28,011.57x = 734,171,704.16
  5. Step 5: Solve for x
    x = 734,171,704.16/28,011.57
  6. Step 6: Final answer
    x = 26,209.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.