Home / 21,458.56-29,620.80-14,843.52

Finding the Fourth Proportional to 21,458.56, 29,620.80 and 14,843.52

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Solution

The fourth proportional to 21,458.56, 29,620.80 and 14,843.52 is: 20,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458.56 : 29,620.80 = 14,843.52 : x
  2. Step 2: Convert to fraction form
    21,458.56/29,620.80 = 14,843.52/x
  3. Step 3: Cross multiply
    21,458.56x = 29,620.80 × 14,843.52
  4. Step 4: Simplify right side
    21,458.56x = 439,676,937.22
  5. Step 5: Solve for x
    x = 439,676,937.22/21,458.56
  6. Step 6: Final answer
    x = 20,489.58

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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.