Home / 21,047.70-29,039.04-13,975.52

Finding the Fourth Proportional to 21,047.70, 29,039.04 and 13,975.52

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Solution

The fourth proportional to 21,047.70, 29,039.04 and 13,975.52 is: 19,281.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.70 : 29,039.04 = 13,975.52 : x
  2. Step 2: Convert to fraction form
    21,047.70/29,039.04 = 13,975.52/x
  3. Step 3: Cross multiply
    21,047.70x = 29,039.04 × 13,975.52
  4. Step 4: Simplify right side
    21,047.70x = 405,835,684.30
  5. Step 5: Solve for x
    x = 405,835,684.30/21,047.70
  6. Step 6: Final answer
    x = 19,281.71

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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.