Home / 14,138.10-21,178.80-8,856.90

Finding the Fourth Proportional to 14,138.10, 21,178.80 and 8,856.90

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Solution

The fourth proportional to 14,138.10, 21,178.80 and 8,856.90 is: 13,267.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.10 : 21,178.80 = 8,856.90 : x
  2. Step 2: Convert to fraction form
    14,138.10/21,178.80 = 8,856.90/x
  3. Step 3: Cross multiply
    14,138.10x = 21,178.80 × 8,856.90
  4. Step 4: Simplify right side
    14,138.10x = 187,578,513.72
  5. Step 5: Solve for x
    x = 187,578,513.72/14,138.10
  6. Step 6: Final answer
    x = 13,267.59

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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.