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Finding the Fourth Proportional to 18,882.21, 26,055.29 and 15,104.01

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Solution

The fourth proportional to 18,882.21, 26,055.29 and 15,104.01 is: 20,841.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.21 : 26,055.29 = 15,104.01 : x
  2. Step 2: Convert to fraction form
    18,882.21/26,055.29 = 15,104.01/x
  3. Step 3: Cross multiply
    18,882.21x = 26,055.29 × 15,104.01
  4. Step 4: Simplify right side
    18,882.21x = 393,539,360.71
  5. Step 5: Solve for x
    x = 393,539,360.71/18,882.21
  6. Step 6: Final answer
    x = 20,841.81

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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.