Home / 21,434.96-29,579.57-11,874.47

Finding the Fourth Proportional to 21,434.96, 29,579.57 and 11,874.47

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Solution

The fourth proportional to 21,434.96, 29,579.57 and 11,874.47 is: 16,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434.96 : 29,579.57 = 11,874.47 : x
  2. Step 2: Convert to fraction form
    21,434.96/29,579.57 = 11,874.47/x
  3. Step 3: Cross multiply
    21,434.96x = 29,579.57 × 11,874.47
  4. Step 4: Simplify right side
    21,434.96x = 351,241,509.31
  5. Step 5: Solve for x
    x = 351,241,509.31/21,434.96
  6. Step 6: Final answer
    x = 16,386.39

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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.