Home / 27,772.72-38,334.40-15,842.56

Finding the Fourth Proportional to 27,772.72, 38,334.40 and 15,842.56

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Solution

The fourth proportional to 27,772.72, 38,334.40 and 15,842.56 is: 21,867.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,772.72 : 38,334.40 = 15,842.56 : x
  2. Step 2: Convert to fraction form
    27,772.72/38,334.40 = 15,842.56/x
  3. Step 3: Cross multiply
    27,772.72x = 38,334.40 × 15,842.56
  4. Step 4: Simplify right side
    27,772.72x = 607,315,032.06
  5. Step 5: Solve for x
    x = 607,315,032.06/27,772.72
  6. Step 6: Final answer
    x = 21,867.32

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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.