Home / 27,810.25-38,379.09-15,235.81

Finding the Fourth Proportional to 27,810.25, 38,379.09 and 15,235.81

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Solution

The fourth proportional to 27,810.25, 38,379.09 and 15,235.81 is: 21,025.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.25 : 38,379.09 = 15,235.81 : x
  2. Step 2: Convert to fraction form
    27,810.25/38,379.09 = 15,235.81/x
  3. Step 3: Cross multiply
    27,810.25x = 38,379.09 × 15,235.81
  4. Step 4: Simplify right side
    27,810.25x = 584,736,523.21
  5. Step 5: Solve for x
    x = 584,736,523.21/27,810.25
  6. Step 6: Final answer
    x = 21,025.94

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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.