Home / 20,039.61-27,655.10-11,087.74

Finding the Fourth Proportional to 20,039.61, 27,655.10 and 11,087.74

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Solution

The fourth proportional to 20,039.61, 27,655.10 and 11,087.74 is: 15,301.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.61 : 27,655.10 = 11,087.74 : x
  2. Step 2: Convert to fraction form
    20,039.61/27,655.10 = 11,087.74/x
  3. Step 3: Cross multiply
    20,039.61x = 27,655.10 × 11,087.74
  4. Step 4: Simplify right side
    20,039.61x = 306,632,558.47
  5. Step 5: Solve for x
    x = 306,632,558.47/20,039.61
  6. Step 6: Final answer
    x = 15,301.32

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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.