Home / 13,653.81-18,841.55-7,685.73

Finding the Fourth Proportional to 13,653.81, 18,841.55 and 7,685.73

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Solution

The fourth proportional to 13,653.81, 18,841.55 and 7,685.73 is: 10,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.81 : 18,841.55 = 7,685.73 : x
  2. Step 2: Convert to fraction form
    13,653.81/18,841.55 = 7,685.73/x
  3. Step 3: Cross multiply
    13,653.81x = 18,841.55 × 7,685.73
  4. Step 4: Simplify right side
    13,653.81x = 144,811,027.65
  5. Step 5: Solve for x
    x = 144,811,027.65/13,653.81
  6. Step 6: Final answer
    x = 10,605.91

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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.