Home / 20,365.24-28,036.38-18,265.72

Finding the Fourth Proportional to 20,365.24, 28,036.38 and 18,265.72

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Solution

The fourth proportional to 20,365.24, 28,036.38 and 18,265.72 is: 25,146.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.24 : 28,036.38 = 18,265.72 : x
  2. Step 2: Convert to fraction form
    20,365.24/28,036.38 = 18,265.72/x
  3. Step 3: Cross multiply
    20,365.24x = 28,036.38 × 18,265.72
  4. Step 4: Simplify right side
    20,365.24x = 512,104,666.89
  5. Step 5: Solve for x
    x = 512,104,666.89/20,365.24
  6. Step 6: Final answer
    x = 25,146.02

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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.