Home / 27,989.66-38,625.27-15,415.58

Finding the Fourth Proportional to 27,989.66, 38,625.27 and 15,415.58

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Solution

The fourth proportional to 27,989.66, 38,625.27 and 15,415.58 is: 21,273.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,989.66 : 38,625.27 = 15,415.58 : x
  2. Step 2: Convert to fraction form
    27,989.66/38,625.27 = 15,415.58/x
  3. Step 3: Cross multiply
    27,989.66x = 38,625.27 × 15,415.58
  4. Step 4: Simplify right side
    27,989.66x = 595,430,939.71
  5. Step 5: Solve for x
    x = 595,430,939.71/27,989.66
  6. Step 6: Final answer
    x = 21,273.25

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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.