Home / 12,448.49-18,628.85-7,770.69

Finding the Fourth Proportional to 12,448.49, 18,628.85 and 7,770.69

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Solution

The fourth proportional to 12,448.49, 18,628.85 and 7,770.69 is: 11,628.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,448.49 : 18,628.85 = 7,770.69 : x
  2. Step 2: Convert to fraction form
    12,448.49/18,628.85 = 7,770.69/x
  3. Step 3: Cross multiply
    12,448.49x = 18,628.85 × 7,770.69
  4. Step 4: Simplify right side
    12,448.49x = 144,759,018.41
  5. Step 5: Solve for x
    x = 144,759,018.41/12,448.49
  6. Step 6: Final answer
    x = 11,628.65

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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.