Home / 13,856.84-19,116.36-9,378.96

Finding the Fourth Proportional to 13,856.84, 19,116.36 and 9,378.96

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Solution

The fourth proportional to 13,856.84, 19,116.36 and 9,378.96 is: 12,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.84 : 19,116.36 = 9,378.96 : x
  2. Step 2: Convert to fraction form
    13,856.84/19,116.36 = 9,378.96/x
  3. Step 3: Cross multiply
    13,856.84x = 19,116.36 × 9,378.96
  4. Step 4: Simplify right side
    13,856.84x = 179,291,575.79
  5. Step 5: Solve for x
    x = 179,291,575.79/13,856.84
  6. Step 6: Final answer
    x = 12,938.85

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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.