Home / 21,336.99-29,435.67-20,348.79

Finding the Fourth Proportional to 21,336.99, 29,435.67 and 20,348.79

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Solution

The fourth proportional to 21,336.99, 29,435.67 and 20,348.79 is: 28,072.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.99 : 29,435.67 = 20,348.79 : x
  2. Step 2: Convert to fraction form
    21,336.99/29,435.67 = 20,348.79/x
  3. Step 3: Cross multiply
    21,336.99x = 29,435.67 × 20,348.79
  4. Step 4: Simplify right side
    21,336.99x = 598,980,267.34
  5. Step 5: Solve for x
    x = 598,980,267.34/21,336.99
  6. Step 6: Final answer
    x = 28,072.39

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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.