Home / 12,993.68-19,490.35-3,132.88

Finding the Fourth Proportional to 12,993.68, 19,490.35 and 3,132.88

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Solution

The fourth proportional to 12,993.68, 19,490.35 and 3,132.88 is: 4,699.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,993.68 : 19,490.35 = 3,132.88 : x
  2. Step 2: Convert to fraction form
    12,993.68/19,490.35 = 3,132.88/x
  3. Step 3: Cross multiply
    12,993.68x = 19,490.35 × 3,132.88
  4. Step 4: Simplify right side
    12,993.68x = 61,060,913.57
  5. Step 5: Solve for x
    x = 61,060,913.57/12,993.68
  6. Step 6: Final answer
    x = 4,699.28

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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.