Home / 19,380.75-26,741.25-11,420.07

Finding the Fourth Proportional to 19,380.75, 26,741.25 and 11,420.07

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Solution

The fourth proportional to 19,380.75, 26,741.25 and 11,420.07 is: 15,757.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,380.75 : 26,741.25 = 11,420.07 : x
  2. Step 2: Convert to fraction form
    19,380.75/26,741.25 = 11,420.07/x
  3. Step 3: Cross multiply
    19,380.75x = 26,741.25 × 11,420.07
  4. Step 4: Simplify right side
    19,380.75x = 305,386,946.89
  5. Step 5: Solve for x
    x = 305,386,946.89/19,380.75
  6. Step 6: Final answer
    x = 15,757.23

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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.