Home / 20,258.10-30,405.15-11,927.70

Finding the Fourth Proportional to 20,258.10, 30,405.15 and 11,927.70

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Solution

The fourth proportional to 20,258.10, 30,405.15 and 11,927.70 is: 17,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.10 : 30,405.15 = 11,927.70 : x
  2. Step 2: Convert to fraction form
    20,258.10/30,405.15 = 11,927.70/x
  3. Step 3: Cross multiply
    20,258.10x = 30,405.15 × 11,927.70
  4. Step 4: Simplify right side
    20,258.10x = 362,663,507.66
  5. Step 5: Solve for x
    x = 362,663,507.66/20,258.10
  6. Step 6: Final answer
    x = 17,902.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.