Home / 27,121.30-40,688.45-11,317.54

Finding the Fourth Proportional to 27,121.30, 40,688.45 and 11,317.54

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Solution

The fourth proportional to 27,121.30, 40,688.45 and 11,317.54 is: 16,979.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,121.30 : 40,688.45 = 11,317.54 : x
  2. Step 2: Convert to fraction form
    27,121.30/40,688.45 = 11,317.54/x
  3. Step 3: Cross multiply
    27,121.30x = 40,688.45 × 11,317.54
  4. Step 4: Simplify right side
    27,121.30x = 460,493,038.13
  5. Step 5: Solve for x
    x = 460,493,038.13/27,121.30
  6. Step 6: Final answer
    x = 16,979.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.