Home / 13,856.20-19,127.85-8,827.31

Finding the Fourth Proportional to 13,856.20, 19,127.85 and 8,827.31

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Solution

The fourth proportional to 13,856.20, 19,127.85 and 8,827.31 is: 12,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.20 : 19,127.85 = 8,827.31 : x
  2. Step 2: Convert to fraction form
    13,856.20/19,127.85 = 8,827.31/x
  3. Step 3: Cross multiply
    13,856.20x = 19,127.85 × 8,827.31
  4. Step 4: Simplify right side
    13,856.20x = 168,847,476.30
  5. Step 5: Solve for x
    x = 168,847,476.30/13,856.20
  6. Step 6: Final answer
    x = 12,185.70

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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.