Home / 20,693.62-28,530.51-15,036.58

Finding the Fourth Proportional to 20,693.62, 28,530.51 and 15,036.58

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Solution

The fourth proportional to 20,693.62, 28,530.51 and 15,036.58 is: 20,731.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.62 : 28,530.51 = 15,036.58 : x
  2. Step 2: Convert to fraction form
    20,693.62/28,530.51 = 15,036.58/x
  3. Step 3: Cross multiply
    20,693.62x = 28,530.51 × 15,036.58
  4. Step 4: Simplify right side
    20,693.62x = 429,001,296.06
  5. Step 5: Solve for x
    x = 429,001,296.06/20,693.62
  6. Step 6: Final answer
    x = 20,731.09

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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.