Home / 12,278.60-16,958.68-8,936.40

Finding the Fourth Proportional to 12,278.60, 16,958.68 and 8,936.40

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Solution

The fourth proportional to 12,278.60, 16,958.68 and 8,936.40 is: 12,342.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.60 : 16,958.68 = 8,936.40 : x
  2. Step 2: Convert to fraction form
    12,278.60/16,958.68 = 8,936.40/x
  3. Step 3: Cross multiply
    12,278.60x = 16,958.68 × 8,936.40
  4. Step 4: Simplify right side
    12,278.60x = 151,549,547.95
  5. Step 5: Solve for x
    x = 151,549,547.95/12,278.60
  6. Step 6: Final answer
    x = 12,342.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.