Home / 27,105.17-37,440.87-20,809.54

Finding the Fourth Proportional to 27,105.17, 37,440.87 and 20,809.54

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Solution

The fourth proportional to 27,105.17, 37,440.87 and 20,809.54 is: 28,744.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,105.17 : 37,440.87 = 20,809.54 : x
  2. Step 2: Convert to fraction form
    27,105.17/37,440.87 = 20,809.54/x
  3. Step 3: Cross multiply
    27,105.17x = 37,440.87 × 20,809.54
  4. Step 4: Simplify right side
    27,105.17x = 779,127,250.67
  5. Step 5: Solve for x
    x = 779,127,250.67/27,105.17
  6. Step 6: Final answer
    x = 28,744.60

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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.