Home / 21,064.20-29,066.82-12,995.58

Finding the Fourth Proportional to 21,064.20, 29,066.82 and 12,995.58

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Solution

The fourth proportional to 21,064.20, 29,066.82 and 12,995.58 is: 17,932.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.20 : 29,066.82 = 12,995.58 : x
  2. Step 2: Convert to fraction form
    21,064.20/29,066.82 = 12,995.58/x
  3. Step 3: Cross multiply
    21,064.20x = 29,066.82 × 12,995.58
  4. Step 4: Simplify right side
    21,064.20x = 377,740,184.66
  5. Step 5: Solve for x
    x = 377,740,184.66/21,064.20
  6. Step 6: Final answer
    x = 17,932.80

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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.