Home / 21,416.96-29,555.44-11,985.50

Finding the Fourth Proportional to 21,416.96, 29,555.44 and 11,985.50

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Solution

The fourth proportional to 21,416.96, 29,555.44 and 11,985.50 is: 16,540.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.96 : 29,555.44 = 11,985.50 : x
  2. Step 2: Convert to fraction form
    21,416.96/29,555.44 = 11,985.50/x
  3. Step 3: Cross multiply
    21,416.96x = 29,555.44 × 11,985.50
  4. Step 4: Simplify right side
    21,416.96x = 354,236,726.12
  5. Step 5: Solve for x
    x = 354,236,726.12/21,416.96
  6. Step 6: Final answer
    x = 16,540.01

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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.