Home / 28,405.89-39,192.26-18,334.76

Finding the Fourth Proportional to 28,405.89, 39,192.26 and 18,334.76

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Solution

The fourth proportional to 28,405.89, 39,192.26 and 18,334.76 is: 25,296.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.89 : 39,192.26 = 18,334.76 : x
  2. Step 2: Convert to fraction form
    28,405.89/39,192.26 = 18,334.76/x
  3. Step 3: Cross multiply
    28,405.89x = 39,192.26 × 18,334.76
  4. Step 4: Simplify right side
    28,405.89x = 718,580,393.32
  5. Step 5: Solve for x
    x = 718,580,393.32/28,405.89
  6. Step 6: Final answer
    x = 25,296.88

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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.