Home / 43,278.68-64,913.16-12,116.36

Finding the Fourth Proportional to 43,278.68, 64,913.16 and 12,116.36

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Solution

The fourth proportional to 43,278.68, 64,913.16 and 12,116.36 is: 18,173.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,278.68 : 64,913.16 = 12,116.36 : x
  2. Step 2: Convert to fraction form
    43,278.68/64,913.16 = 12,116.36/x
  3. Step 3: Cross multiply
    43,278.68x = 64,913.16 × 12,116.36
  4. Step 4: Simplify right side
    43,278.68x = 786,511,215.30
  5. Step 5: Solve for x
    x = 786,511,215.30/43,278.68
  6. Step 6: Final answer
    x = 18,173.18

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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.