Home / 15,745.04-21,727.80-8,671.28

Finding the Fourth Proportional to 15,745.04, 21,727.80 and 8,671.28

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Solution

The fourth proportional to 15,745.04, 21,727.80 and 8,671.28 is: 11,966.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.04 : 21,727.80 = 8,671.28 : x
  2. Step 2: Convert to fraction form
    15,745.04/21,727.80 = 8,671.28/x
  3. Step 3: Cross multiply
    15,745.04x = 21,727.80 × 8,671.28
  4. Step 4: Simplify right side
    15,745.04x = 188,407,837.58
  5. Step 5: Solve for x
    x = 188,407,837.58/15,745.04
  6. Step 6: Final answer
    x = 11,966.17

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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.