Home / 18,351.70-25,316.64-12,385.30

Finding the Fourth Proportional to 18,351.70, 25,316.64 and 12,385.30

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Solution

The fourth proportional to 18,351.70, 25,316.64 and 12,385.30 is: 17,085.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.70 : 25,316.64 = 12,385.30 : x
  2. Step 2: Convert to fraction form
    18,351.70/25,316.64 = 12,385.30/x
  3. Step 3: Cross multiply
    18,351.70x = 25,316.64 × 12,385.30
  4. Step 4: Simplify right side
    18,351.70x = 313,554,181.39
  5. Step 5: Solve for x
    x = 313,554,181.39/18,351.70
  6. Step 6: Final answer
    x = 17,085.84

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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.