Home / 21,393.45-29,518.22-13,432.77

Finding the Fourth Proportional to 21,393.45, 29,518.22 and 13,432.77

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Solution

The fourth proportional to 21,393.45, 29,518.22 and 13,432.77 is: 18,534.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.45 : 29,518.22 = 13,432.77 : x
  2. Step 2: Convert to fraction form
    21,393.45/29,518.22 = 13,432.77/x
  3. Step 3: Cross multiply
    21,393.45x = 29,518.22 × 13,432.77
  4. Step 4: Simplify right side
    21,393.45x = 396,511,493.65
  5. Step 5: Solve for x
    x = 396,511,493.65/21,393.45
  6. Step 6: Final answer
    x = 18,534.25

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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.