Home / 21,850.02-30,162.45-13,790.91

Finding the Fourth Proportional to 21,850.02, 30,162.45 and 13,790.91

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Solution

The fourth proportional to 21,850.02, 30,162.45 and 13,790.91 is: 19,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.02 : 30,162.45 = 13,790.91 : x
  2. Step 2: Convert to fraction form
    21,850.02/30,162.45 = 13,790.91/x
  3. Step 3: Cross multiply
    21,850.02x = 30,162.45 × 13,790.91
  4. Step 4: Simplify right side
    21,850.02x = 415,967,633.33
  5. Step 5: Solve for x
    x = 415,967,633.33/21,850.02
  6. Step 6: Final answer
    x = 19,037.40

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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.