Home / 19,620.61-27,077.36-11,122.89

Finding the Fourth Proportional to 19,620.61, 27,077.36 and 11,122.89

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Solution

The fourth proportional to 19,620.61, 27,077.36 and 11,122.89 is: 15,350.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.61 : 27,077.36 = 11,122.89 : x
  2. Step 2: Convert to fraction form
    19,620.61/27,077.36 = 11,122.89/x
  3. Step 3: Cross multiply
    19,620.61x = 27,077.36 × 11,122.89
  4. Step 4: Simplify right side
    19,620.61x = 301,178,496.77
  5. Step 5: Solve for x
    x = 301,178,496.77/19,620.61
  6. Step 6: Final answer
    x = 15,350.11

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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.