Home / 14,780.57-20,396.39-8,406.32

Finding the Fourth Proportional to 14,780.57, 20,396.39 and 8,406.32

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Solution

The fourth proportional to 14,780.57, 20,396.39 and 8,406.32 is: 11,600.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.57 : 20,396.39 = 8,406.32 : x
  2. Step 2: Convert to fraction form
    14,780.57/20,396.39 = 8,406.32/x
  3. Step 3: Cross multiply
    14,780.57x = 20,396.39 × 8,406.32
  4. Step 4: Simplify right side
    14,780.57x = 171,458,437.17
  5. Step 5: Solve for x
    x = 171,458,437.17/14,780.57
  6. Step 6: Final answer
    x = 11,600.26

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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.