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Finding the Fourth Proportional to 23,977, 35,987.65 and 12,139.08

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Solution

The fourth proportional to 23,977, 35,987.65 and 12,139.08 is: 18,219.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,977 : 35,987.65 = 12,139.08 : x
  2. Step 2: Convert to fraction form
    23,977/35,987.65 = 12,139.08/x
  3. Step 3: Cross multiply
    23,977x = 35,987.65 × 12,139.08
  4. Step 4: Simplify right side
    23,977x = 436,856,962.36
  5. Step 5: Solve for x
    x = 436,856,962.36/23,977
  6. Step 6: Final answer
    x = 18,219.83

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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.