Home / 45,897.45-68,847.87-12,620.12

Finding the Fourth Proportional to 45,897.45, 68,847.87 and 12,620.12

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Solution

The fourth proportional to 45,897.45, 68,847.87 and 12,620.12 is: 18,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,897.45 : 68,847.87 = 12,620.12 : x
  2. Step 2: Convert to fraction form
    45,897.45/68,847.87 = 12,620.12/x
  3. Step 3: Cross multiply
    45,897.45x = 68,847.87 × 12,620.12
  4. Step 4: Simplify right side
    45,897.45x = 868,868,036.91
  5. Step 5: Solve for x
    x = 868,868,036.91/45,897.45
  6. Step 6: Final answer
    x = 18,930.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.