Home / 29,378.88-40,528.32-18,628.80

Finding the Fourth Proportional to 29,378.88, 40,528.32 and 18,628.80

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Solution

The fourth proportional to 29,378.88, 40,528.32 and 18,628.80 is: 25,698.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,378.88 : 40,528.32 = 18,628.80 : x
  2. Step 2: Convert to fraction form
    29,378.88/40,528.32 = 18,628.80/x
  3. Step 3: Cross multiply
    29,378.88x = 40,528.32 × 18,628.80
  4. Step 4: Simplify right side
    29,378.88x = 754,993,967.62
  5. Step 5: Solve for x
    x = 754,993,967.62/29,378.88
  6. Step 6: Final answer
    x = 25,698.53

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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.