Home / 15,728.32-21,705.66-8,655.04

Finding the Fourth Proportional to 15,728.32, 21,705.66 and 8,655.04

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Solution

The fourth proportional to 15,728.32, 21,705.66 and 8,655.04 is: 11,944.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.32 : 21,705.66 = 8,655.04 : x
  2. Step 2: Convert to fraction form
    15,728.32/21,705.66 = 8,655.04/x
  3. Step 3: Cross multiply
    15,728.32x = 21,705.66 × 8,655.04
  4. Step 4: Simplify right side
    15,728.32x = 187,863,355.53
  5. Step 5: Solve for x
    x = 187,863,355.53/15,728.32
  6. Step 6: Final answer
    x = 11,944.27

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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.