Home / 21,272.77-29,357.12-11,713.64

Finding the Fourth Proportional to 21,272.77, 29,357.12 and 11,713.64

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Solution

The fourth proportional to 21,272.77, 29,357.12 and 11,713.64 is: 16,165.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.77 : 29,357.12 = 11,713.64 : x
  2. Step 2: Convert to fraction form
    21,272.77/29,357.12 = 11,713.64/x
  3. Step 3: Cross multiply
    21,272.77x = 29,357.12 × 11,713.64
  4. Step 4: Simplify right side
    21,272.77x = 343,878,808.51
  5. Step 5: Solve for x
    x = 343,878,808.51/21,272.77
  6. Step 6: Final answer
    x = 16,165.21

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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.