Home / 27,355.12-37,747.20-15,420.28

Finding the Fourth Proportional to 27,355.12, 37,747.20 and 15,420.28

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Solution

The fourth proportional to 27,355.12, 37,747.20 and 15,420.28 is: 21,278.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,355.12 : 37,747.20 = 15,420.28 : x
  2. Step 2: Convert to fraction form
    27,355.12/37,747.20 = 15,420.28/x
  3. Step 3: Cross multiply
    27,355.12x = 37,747.20 × 15,420.28
  4. Step 4: Simplify right side
    27,355.12x = 582,072,393.22
  5. Step 5: Solve for x
    x = 582,072,393.22/27,355.12
  6. Step 6: Final answer
    x = 21,278.37

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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.