Home / 12,655.04-18,994.12-6,419.34

Finding the Fourth Proportional to 12,655.04, 18,994.12 and 6,419.34

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Solution

The fourth proportional to 12,655.04, 18,994.12 and 6,419.34 is: 9,634.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.04 : 18,994.12 = 6,419.34 : x
  2. Step 2: Convert to fraction form
    12,655.04/18,994.12 = 6,419.34/x
  3. Step 3: Cross multiply
    12,655.04x = 18,994.12 × 6,419.34
  4. Step 4: Simplify right side
    12,655.04x = 121,929,698.23
  5. Step 5: Solve for x
    x = 121,929,698.23/12,655.04
  6. Step 6: Final answer
    x = 9,634.88

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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.