Home / 18,670.13-25,768.33-11,120.87

Finding the Fourth Proportional to 18,670.13, 25,768.33 and 11,120.87

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Solution

The fourth proportional to 18,670.13, 25,768.33 and 11,120.87 is: 15,348.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.13 : 25,768.33 = 11,120.87 : x
  2. Step 2: Convert to fraction form
    18,670.13/25,768.33 = 11,120.87/x
  3. Step 3: Cross multiply
    18,670.13x = 25,768.33 × 11,120.87
  4. Step 4: Simplify right side
    18,670.13x = 286,566,284.67
  5. Step 5: Solve for x
    x = 286,566,284.67/18,670.13
  6. Step 6: Final answer
    x = 15,348.92

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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.