Home / 21,278.66-29,349.61-18,441.02

Finding the Fourth Proportional to 21,278.66, 29,349.61 and 18,441.02

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Solution

The fourth proportional to 21,278.66, 29,349.61 and 18,441.02 is: 25,435.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.66 : 29,349.61 = 18,441.02 : x
  2. Step 2: Convert to fraction form
    21,278.66/29,349.61 = 18,441.02/x
  3. Step 3: Cross multiply
    21,278.66x = 29,349.61 × 18,441.02
  4. Step 4: Simplify right side
    21,278.66x = 541,236,772.27
  5. Step 5: Solve for x
    x = 541,236,772.27/21,278.66
  6. Step 6: Final answer
    x = 25,435.67

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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.