Home / 27,121.80-40,682.70-13,999.80

Finding the Fourth Proportional to 27,121.80, 40,682.70 and 13,999.80

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Solution

The fourth proportional to 27,121.80, 40,682.70 and 13,999.80 is: 20,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,121.80 : 40,682.70 = 13,999.80 : x
  2. Step 2: Convert to fraction form
    27,121.80/40,682.70 = 13,999.80/x
  3. Step 3: Cross multiply
    27,121.80x = 40,682.70 × 13,999.80
  4. Step 4: Simplify right side
    27,121.80x = 569,549,663.46
  5. Step 5: Solve for x
    x = 569,549,663.46/27,121.80
  6. Step 6: Final answer
    x = 20,999.70

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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.