Home / 28,409.63-39,198.47-18,335.93

Finding the Fourth Proportional to 28,409.63, 39,198.47 and 18,335.93

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Solution

The fourth proportional to 28,409.63, 39,198.47 and 18,335.93 is: 25,299.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.63 : 39,198.47 = 18,335.93 : x
  2. Step 2: Convert to fraction form
    28,409.63/39,198.47 = 18,335.93/x
  3. Step 3: Cross multiply
    28,409.63x = 39,198.47 × 18,335.93
  4. Step 4: Simplify right side
    28,409.63x = 718,740,114.36
  5. Step 5: Solve for x
    x = 718,740,114.36/28,409.63
  6. Step 6: Final answer
    x = 25,299.18

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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.