Home / 21,205.20-29,246.48-14,829.68

Finding the Fourth Proportional to 21,205.20, 29,246.48 and 14,829.68

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Solution

The fourth proportional to 21,205.20, 29,246.48 and 14,829.68 is: 20,453.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.20 : 29,246.48 = 14,829.68 : x
  2. Step 2: Convert to fraction form
    21,205.20/29,246.48 = 14,829.68/x
  3. Step 3: Cross multiply
    21,205.20x = 29,246.48 × 14,829.68
  4. Step 4: Simplify right side
    21,205.20x = 433,715,939.53
  5. Step 5: Solve for x
    x = 433,715,939.53/21,205.20
  6. Step 6: Final answer
    x = 20,453.28

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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.