Home / 21,215.66-29,277.83-11,655.77

Finding the Fourth Proportional to 21,215.66, 29,277.83 and 11,655.77

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Solution

The fourth proportional to 21,215.66, 29,277.83 and 11,655.77 is: 16,085.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.66 : 29,277.83 = 11,655.77 : x
  2. Step 2: Convert to fraction form
    21,215.66/29,277.83 = 11,655.77/x
  3. Step 3: Cross multiply
    21,215.66x = 29,277.83 × 11,655.77
  4. Step 4: Simplify right side
    21,215.66x = 341,255,535.33
  5. Step 5: Solve for x
    x = 341,255,535.33/21,215.66
  6. Step 6: Final answer
    x = 16,085.08

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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.