Home / 21,120.56-29,133.64-13,950.52

Finding the Fourth Proportional to 21,120.56, 29,133.64 and 13,950.52

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Solution

The fourth proportional to 21,120.56, 29,133.64 and 13,950.52 is: 19,243.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120.56 : 29,133.64 = 13,950.52 : x
  2. Step 2: Convert to fraction form
    21,120.56/29,133.64 = 13,950.52/x
  3. Step 3: Cross multiply
    21,120.56x = 29,133.64 × 13,950.52
  4. Step 4: Simplify right side
    21,120.56x = 406,429,427.49
  5. Step 5: Solve for x
    x = 406,429,427.49/21,120.56
  6. Step 6: Final answer
    x = 19,243.31

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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.