Home / 12,678.05-18,944.57-9,659.50

Finding the Fourth Proportional to 12,678.05, 18,944.57 and 9,659.50

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Solution

The fourth proportional to 12,678.05, 18,944.57 and 9,659.50 is: 14,434.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.05 : 18,944.57 = 9,659.50 : x
  2. Step 2: Convert to fraction form
    12,678.05/18,944.57 = 9,659.50/x
  3. Step 3: Cross multiply
    12,678.05x = 18,944.57 × 9,659.50
  4. Step 4: Simplify right side
    12,678.05x = 182,995,026.55
  5. Step 5: Solve for x
    x = 182,995,026.55/12,678.05
  6. Step 6: Final answer
    x = 14,434.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.