Home / 54,204.91-81,328.32-20,915.73

Finding the Fourth Proportional to 54,204.91, 81,328.32 and 20,915.73

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Solution

The fourth proportional to 54,204.91, 81,328.32 and 20,915.73 is: 31,381.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,204.91 : 81,328.32 = 20,915.73 : x
  2. Step 2: Convert to fraction form
    54,204.91/81,328.32 = 20,915.73/x
  3. Step 3: Cross multiply
    54,204.91x = 81,328.32 × 20,915.73
  4. Step 4: Simplify right side
    54,204.91x = 1,701,041,182.47
  5. Step 5: Solve for x
    x = 1,701,041,182.47/54,204.91
  6. Step 6: Final answer
    x = 31,381.68

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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.