Home / 12,123.12-16,739.32-9,465.92

Finding the Fourth Proportional to 12,123.12, 16,739.32 and 9,465.92

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Solution

The fourth proportional to 12,123.12, 16,739.32 and 9,465.92 is: 13,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.12 : 16,739.32 = 9,465.92 : x
  2. Step 2: Convert to fraction form
    12,123.12/16,739.32 = 9,465.92/x
  3. Step 3: Cross multiply
    12,123.12x = 16,739.32 × 9,465.92
  4. Step 4: Simplify right side
    12,123.12x = 158,453,063.97
  5. Step 5: Solve for x
    x = 158,453,063.97/12,123.12
  6. Step 6: Final answer
    x = 13,070.32

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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.