Home / 21,609.09-29,809.43-14,436.71

Finding the Fourth Proportional to 21,609.09, 29,809.43 and 14,436.71

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Solution

The fourth proportional to 21,609.09, 29,809.43 and 14,436.71 is: 19,915.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.09 : 29,809.43 = 14,436.71 : x
  2. Step 2: Convert to fraction form
    21,609.09/29,809.43 = 14,436.71/x
  3. Step 3: Cross multiply
    21,609.09x = 29,809.43 × 14,436.71
  4. Step 4: Simplify right side
    21,609.09x = 430,350,228.85
  5. Step 5: Solve for x
    x = 430,350,228.85/21,609.09
  6. Step 6: Final answer
    x = 19,915.24

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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.