Home / 21,045.69-29,036.27-13,973.51

Finding the Fourth Proportional to 21,045.69, 29,036.27 and 13,973.51

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Solution

The fourth proportional to 21,045.69, 29,036.27 and 13,973.51 is: 19,278.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.69 : 29,036.27 = 13,973.51 : x
  2. Step 2: Convert to fraction form
    21,045.69/29,036.27 = 13,973.51/x
  3. Step 3: Cross multiply
    21,045.69x = 29,036.27 × 13,973.51
  4. Step 4: Simplify right side
    21,045.69x = 405,738,716.73
  5. Step 5: Solve for x
    x = 405,738,716.73/21,045.69
  6. Step 6: Final answer
    x = 19,278.95

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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.