Home / 27,887.72-38,485.10-15,140.90

Finding the Fourth Proportional to 27,887.72, 38,485.10 and 15,140.90

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Solution

The fourth proportional to 27,887.72, 38,485.10 and 15,140.90 is: 20,894.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,887.72 : 38,485.10 = 15,140.90 : x
  2. Step 2: Convert to fraction form
    27,887.72/38,485.10 = 15,140.90/x
  3. Step 3: Cross multiply
    27,887.72x = 38,485.10 × 15,140.90
  4. Step 4: Simplify right side
    27,887.72x = 582,698,974.89
  5. Step 5: Solve for x
    x = 582,698,974.89/27,887.72
  6. Step 6: Final answer
    x = 20,894.47

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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.