Home / 27,355.07-37,748.89-15,420.88

Finding the Fourth Proportional to 27,355.07, 37,748.89 and 15,420.88

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Solution

The fourth proportional to 27,355.07, 37,748.89 and 15,420.88 is: 21,280.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,355.07 : 37,748.89 = 15,420.88 : x
  2. Step 2: Convert to fraction form
    27,355.07/37,748.89 = 15,420.88/x
  3. Step 3: Cross multiply
    27,355.07x = 37,748.89 × 15,420.88
  4. Step 4: Simplify right side
    27,355.07x = 582,120,969.90
  5. Step 5: Solve for x
    x = 582,120,969.90/27,355.07
  6. Step 6: Final answer
    x = 21,280.19

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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.