Home / 21,510.33-29,675.97-15,858.52

Finding the Fourth Proportional to 21,510.33, 29,675.97 and 15,858.52

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Solution

The fourth proportional to 21,510.33, 29,675.97 and 15,858.52 is: 21,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.33 : 29,675.97 = 15,858.52 : x
  2. Step 2: Convert to fraction form
    21,510.33/29,675.97 = 15,858.52/x
  3. Step 3: Cross multiply
    21,510.33x = 29,675.97 × 15,858.52
  4. Step 4: Simplify right side
    21,510.33x = 470,616,889.57
  5. Step 5: Solve for x
    x = 470,616,889.57/21,510.33
  6. Step 6: Final answer
    x = 21,878.64

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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.