Home / 12,840.80-19,267.60-7,298.40

Finding the Fourth Proportional to 12,840.80, 19,267.60 and 7,298.40

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Solution

The fourth proportional to 12,840.80, 19,267.60 and 7,298.40 is: 10,951.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.80 : 19,267.60 = 7,298.40 : x
  2. Step 2: Convert to fraction form
    12,840.80/19,267.60 = 7,298.40/x
  3. Step 3: Cross multiply
    12,840.80x = 19,267.60 × 7,298.40
  4. Step 4: Simplify right side
    12,840.80x = 140,622,651.84
  5. Step 5: Solve for x
    x = 140,622,651.84/12,840.80
  6. Step 6: Final answer
    x = 10,951.24

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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.