Home / 18,085.78-27,130.35-5,605.90

Finding the Fourth Proportional to 18,085.78, 27,130.35 and 5,605.90

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Solution

The fourth proportional to 18,085.78, 27,130.35 and 5,605.90 is: 8,409.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.78 : 27,130.35 = 5,605.90 : x
  2. Step 2: Convert to fraction form
    18,085.78/27,130.35 = 5,605.90/x
  3. Step 3: Cross multiply
    18,085.78x = 27,130.35 × 5,605.90
  4. Step 4: Simplify right side
    18,085.78x = 152,090,029.07
  5. Step 5: Solve for x
    x = 152,090,029.07/18,085.78
  6. Step 6: Final answer
    x = 8,409.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.