Home / 12,450.51-18,681.71-7,769.25

Finding the Fourth Proportional to 12,450.51, 18,681.71 and 7,769.25

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Solution

The fourth proportional to 12,450.51, 18,681.71 and 7,769.25 is: 11,657.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.51 : 18,681.71 = 7,769.25 : x
  2. Step 2: Convert to fraction form
    12,450.51/18,681.71 = 7,769.25/x
  3. Step 3: Cross multiply
    12,450.51x = 18,681.71 × 7,769.25
  4. Step 4: Simplify right side
    12,450.51x = 145,142,836.57
  5. Step 5: Solve for x
    x = 145,142,836.57/12,450.51
  6. Step 6: Final answer
    x = 11,657.58

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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.