Home / 12,708.20-19,079.40-7,448.60

Finding the Fourth Proportional to 12,708.20, 19,079.40 and 7,448.60

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Solution

The fourth proportional to 12,708.20, 19,079.40 and 7,448.60 is: 11,182.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.20 : 19,079.40 = 7,448.60 : x
  2. Step 2: Convert to fraction form
    12,708.20/19,079.40 = 7,448.60/x
  3. Step 3: Cross multiply
    12,708.20x = 19,079.40 × 7,448.60
  4. Step 4: Simplify right side
    12,708.20x = 142,114,818.84
  5. Step 5: Solve for x
    x = 142,114,818.84/12,708.20
  6. Step 6: Final answer
    x = 11,182.92

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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.