Home / 20,848.69-28,775.66-13,293.28

Finding the Fourth Proportional to 20,848.69, 28,775.66 and 13,293.28

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Solution

The fourth proportional to 20,848.69, 28,775.66 and 13,293.28 is: 18,347.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.69 : 28,775.66 = 13,293.28 : x
  2. Step 2: Convert to fraction form
    20,848.69/28,775.66 = 13,293.28/x
  3. Step 3: Cross multiply
    20,848.69x = 28,775.66 × 13,293.28
  4. Step 4: Simplify right side
    20,848.69x = 382,522,905.56
  5. Step 5: Solve for x
    x = 382,522,905.56/20,848.69
  6. Step 6: Final answer
    x = 18,347.58

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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.