Home / 12,712.96-19,064.76-4,390.84

Finding the Fourth Proportional to 12,712.96, 19,064.76 and 4,390.84

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Solution

The fourth proportional to 12,712.96, 19,064.76 and 4,390.84 is: 6,584.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.96 : 19,064.76 = 4,390.84 : x
  2. Step 2: Convert to fraction form
    12,712.96/19,064.76 = 4,390.84/x
  3. Step 3: Cross multiply
    12,712.96x = 19,064.76 × 4,390.84
  4. Step 4: Simplify right side
    12,712.96x = 83,710,310.80
  5. Step 5: Solve for x
    x = 83,710,310.80/12,712.96
  6. Step 6: Final answer
    x = 6,584.64

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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.