Home / 20,607.12-28,435.94-11,655.40

Finding the Fourth Proportional to 20,607.12, 28,435.94 and 11,655.40

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Solution

The fourth proportional to 20,607.12, 28,435.94 and 11,655.40 is: 16,083.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.12 : 28,435.94 = 11,655.40 : x
  2. Step 2: Convert to fraction form
    20,607.12/28,435.94 = 11,655.40/x
  3. Step 3: Cross multiply
    20,607.12x = 28,435.94 × 11,655.40
  4. Step 4: Simplify right side
    20,607.12x = 331,432,255.08
  5. Step 5: Solve for x
    x = 331,432,255.08/20,607.12
  6. Step 6: Final answer
    x = 16,083.39

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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.