Home / 18,705.32-25,811.52-10,321.28

Finding the Fourth Proportional to 18,705.32, 25,811.52 and 10,321.28

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Solution

The fourth proportional to 18,705.32, 25,811.52 and 10,321.28 is: 14,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.32 : 25,811.52 = 10,321.28 : x
  2. Step 2: Convert to fraction form
    18,705.32/25,811.52 = 10,321.28/x
  3. Step 3: Cross multiply
    18,705.32x = 25,811.52 × 10,321.28
  4. Step 4: Simplify right side
    18,705.32x = 266,407,925.15
  5. Step 5: Solve for x
    x = 266,407,925.15/18,705.32
  6. Step 6: Final answer
    x = 14,242.36

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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.