Home / 12,432.78-18,645.30-4,111.02

Finding the Fourth Proportional to 12,432.78, 18,645.30 and 4,111.02

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Solution

The fourth proportional to 12,432.78, 18,645.30 and 4,111.02 is: 6,165.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.78 : 18,645.30 = 4,111.02 : x
  2. Step 2: Convert to fraction form
    12,432.78/18,645.30 = 4,111.02/x
  3. Step 3: Cross multiply
    12,432.78x = 18,645.30 × 4,111.02
  4. Step 4: Simplify right side
    12,432.78x = 76,651,201.21
  5. Step 5: Solve for x
    x = 76,651,201.21/12,432.78
  6. Step 6: Final answer
    x = 6,165.25

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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.