Home / 21,074.73-29,070.27-13,518.51

Finding the Fourth Proportional to 21,074.73, 29,070.27 and 13,518.51

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Solution

The fourth proportional to 21,074.73, 29,070.27 and 13,518.51 is: 18,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.73 : 29,070.27 = 13,518.51 : x
  2. Step 2: Convert to fraction form
    21,074.73/29,070.27 = 13,518.51/x
  3. Step 3: Cross multiply
    21,074.73x = 29,070.27 × 13,518.51
  4. Step 4: Simplify right side
    21,074.73x = 392,986,735.70
  5. Step 5: Solve for x
    x = 392,986,735.70/21,074.73
  6. Step 6: Final answer
    x = 18,647.30

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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.