Home / 21,350.46-29,453.43-13,388.70

Finding the Fourth Proportional to 21,350.46, 29,453.43 and 13,388.70

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Solution

The fourth proportional to 21,350.46, 29,453.43 and 13,388.70 is: 18,470.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.46 : 29,453.43 = 13,388.70 : x
  2. Step 2: Convert to fraction form
    21,350.46/29,453.43 = 13,388.70/x
  3. Step 3: Cross multiply
    21,350.46x = 29,453.43 × 13,388.70
  4. Step 4: Simplify right side
    21,350.46x = 394,343,138.24
  5. Step 5: Solve for x
    x = 394,343,138.24/21,350.46
  6. Step 6: Final answer
    x = 18,470.01

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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.