Home / 19,642.87-27,108.60-11,146.45

Finding the Fourth Proportional to 19,642.87, 27,108.60 and 11,146.45

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Solution

The fourth proportional to 19,642.87, 27,108.60 and 11,146.45 is: 15,382.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,642.87 : 27,108.60 = 11,146.45 : x
  2. Step 2: Convert to fraction form
    19,642.87/27,108.60 = 11,146.45/x
  3. Step 3: Cross multiply
    19,642.87x = 27,108.60 × 11,146.45
  4. Step 4: Simplify right side
    19,642.87x = 302,164,518.93
  5. Step 5: Solve for x
    x = 302,164,518.93/19,642.87
  6. Step 6: Final answer
    x = 15,382.91

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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.