Home / 21,085.56-29,103.03-13,916.79

Finding the Fourth Proportional to 21,085.56, 29,103.03 and 13,916.79

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Solution

The fourth proportional to 21,085.56, 29,103.03 and 13,916.79 is: 19,208.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.56 : 29,103.03 = 13,916.79 : x
  2. Step 2: Convert to fraction form
    21,085.56/29,103.03 = 13,916.79/x
  3. Step 3: Cross multiply
    21,085.56x = 29,103.03 × 13,916.79
  4. Step 4: Simplify right side
    21,085.56x = 405,020,756.87
  5. Step 5: Solve for x
    x = 405,020,756.87/21,085.56
  6. Step 6: Final answer
    x = 19,208.44

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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.