Home / 21,283.25-29,357.57-15,305.45

Finding the Fourth Proportional to 21,283.25, 29,357.57 and 15,305.45

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Solution

The fourth proportional to 21,283.25, 29,357.57 and 15,305.45 is: 21,111.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.25 : 29,357.57 = 15,305.45 : x
  2. Step 2: Convert to fraction form
    21,283.25/29,357.57 = 15,305.45/x
  3. Step 3: Cross multiply
    21,283.25x = 29,357.57 × 15,305.45
  4. Step 4: Simplify right side
    21,283.25x = 449,330,672.97
  5. Step 5: Solve for x
    x = 449,330,672.97/21,283.25
  6. Step 6: Final answer
    x = 21,111.94

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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.