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Finding the Fourth Proportional to 29,085.80, 43,628.70 and 13,290.80

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Solution

The fourth proportional to 29,085.80, 43,628.70 and 13,290.80 is: 19,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,085.80 : 43,628.70 = 13,290.80 : x
  2. Step 2: Convert to fraction form
    29,085.80/43,628.70 = 13,290.80/x
  3. Step 3: Cross multiply
    29,085.80x = 43,628.70 × 13,290.80
  4. Step 4: Simplify right side
    29,085.80x = 579,860,325.96
  5. Step 5: Solve for x
    x = 579,860,325.96/29,085.80
  6. Step 6: Final answer
    x = 19,936.20

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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.