Home / 18,129.69-24,972.35-12,815.37

Finding the Fourth Proportional to 18,129.69, 24,972.35 and 12,815.37

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Solution

The fourth proportional to 18,129.69, 24,972.35 and 12,815.37 is: 17,652.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.69 : 24,972.35 = 12,815.37 : x
  2. Step 2: Convert to fraction form
    18,129.69/24,972.35 = 12,815.37/x
  3. Step 3: Cross multiply
    18,129.69x = 24,972.35 × 12,815.37
  4. Step 4: Simplify right side
    18,129.69x = 320,029,905.02
  5. Step 5: Solve for x
    x = 320,029,905.02/18,129.69
  6. Step 6: Final answer
    x = 17,652.25

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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.