Home / 19,381.78-26,750.34-11,423.53

Finding the Fourth Proportional to 19,381.78, 26,750.34 and 11,423.53

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Solution

The fourth proportional to 19,381.78, 26,750.34 and 11,423.53 is: 15,766.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,381.78 : 26,750.34 = 11,423.53 : x
  2. Step 2: Convert to fraction form
    19,381.78/26,750.34 = 11,423.53/x
  3. Step 3: Cross multiply
    19,381.78x = 26,750.34 × 11,423.53
  4. Step 4: Simplify right side
    19,381.78x = 305,583,120.63
  5. Step 5: Solve for x
    x = 305,583,120.63/19,381.78
  6. Step 6: Final answer
    x = 15,766.52

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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.