Home / 21,645.80-29,852.36-15,261.12

Finding the Fourth Proportional to 21,645.80, 29,852.36 and 15,261.12

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Solution

The fourth proportional to 21,645.80, 29,852.36 and 15,261.12 is: 21,047.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,645.80 : 29,852.36 = 15,261.12 : x
  2. Step 2: Convert to fraction form
    21,645.80/29,852.36 = 15,261.12/x
  3. Step 3: Cross multiply
    21,645.80x = 29,852.36 × 15,261.12
  4. Step 4: Simplify right side
    21,645.80x = 455,580,371.94
  5. Step 5: Solve for x
    x = 455,580,371.94/21,645.80
  6. Step 6: Final answer
    x = 21,047.06

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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.