Home / 28,409.88-39,197.76-18,338.76

Finding the Fourth Proportional to 28,409.88, 39,197.76 and 18,338.76

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Solution

The fourth proportional to 28,409.88, 39,197.76 and 18,338.76 is: 25,302.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.88 : 39,197.76 = 18,338.76 : x
  2. Step 2: Convert to fraction form
    28,409.88/39,197.76 = 18,338.76/x
  3. Step 3: Cross multiply
    28,409.88x = 39,197.76 × 18,338.76
  4. Step 4: Simplify right side
    28,409.88x = 718,838,313.18
  5. Step 5: Solve for x
    x = 718,838,313.18/28,409.88
  6. Step 6: Final answer
    x = 25,302.41

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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.