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Finding the Fourth Proportional to 18,165.76, 25,055.76 and 15,771.04

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Solution

The fourth proportional to 18,165.76, 25,055.76 and 15,771.04 is: 21,752.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,165.76 : 25,055.76 = 15,771.04 : x
  2. Step 2: Convert to fraction form
    18,165.76/25,055.76 = 15,771.04/x
  3. Step 3: Cross multiply
    18,165.76x = 25,055.76 × 15,771.04
  4. Step 4: Simplify right side
    18,165.76x = 395,155,393.19
  5. Step 5: Solve for x
    x = 395,155,393.19/18,165.76
  6. Step 6: Final answer
    x = 21,752.76

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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.