Home / 12,860.40-19,276.20-5,463.60

Finding the Fourth Proportional to 12,860.40, 19,276.20 and 5,463.60

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Solution

The fourth proportional to 12,860.40, 19,276.20 and 5,463.60 is: 8,189.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.40 : 19,276.20 = 5,463.60 : x
  2. Step 2: Convert to fraction form
    12,860.40/19,276.20 = 5,463.60/x
  3. Step 3: Cross multiply
    12,860.40x = 19,276.20 × 5,463.60
  4. Step 4: Simplify right side
    12,860.40x = 105,317,446.32
  5. Step 5: Solve for x
    x = 105,317,446.32/12,860.40
  6. Step 6: Final answer
    x = 8,189.28

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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.