Home / 13,681.96-18,882.86-8,378.08

Finding the Fourth Proportional to 13,681.96, 18,882.86 and 8,378.08

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Solution

The fourth proportional to 13,681.96, 18,882.86 and 8,378.08 is: 11,562.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.96 : 18,882.86 = 8,378.08 : x
  2. Step 2: Convert to fraction form
    13,681.96/18,882.86 = 8,378.08/x
  3. Step 3: Cross multiply
    13,681.96x = 18,882.86 × 8,378.08
  4. Step 4: Simplify right side
    13,681.96x = 158,202,111.71
  5. Step 5: Solve for x
    x = 158,202,111.71/13,681.96
  6. Step 6: Final answer
    x = 11,562.83

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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.