Home / 27,999.52-38,639.33-15,424.27

Finding the Fourth Proportional to 27,999.52, 38,639.33 and 15,424.27

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Solution

The fourth proportional to 27,999.52, 38,639.33 and 15,424.27 is: 21,285.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.52 : 38,639.33 = 15,424.27 : x
  2. Step 2: Convert to fraction form
    27,999.52/38,639.33 = 15,424.27/x
  3. Step 3: Cross multiply
    27,999.52x = 38,639.33 × 15,424.27
  4. Step 4: Simplify right side
    27,999.52x = 595,983,342.66
  5. Step 5: Solve for x
    x = 595,983,342.66/27,999.52
  6. Step 6: Final answer
    x = 21,285.49

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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.