Home / 19,904.20-29,856.30-8,219.08

Finding the Fourth Proportional to 19,904.20, 29,856.30 and 8,219.08

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Solution

The fourth proportional to 19,904.20, 29,856.30 and 8,219.08 is: 12,328.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,904.20 : 29,856.30 = 8,219.08 : x
  2. Step 2: Convert to fraction form
    19,904.20/29,856.30 = 8,219.08/x
  3. Step 3: Cross multiply
    19,904.20x = 29,856.30 × 8,219.08
  4. Step 4: Simplify right side
    19,904.20x = 245,391,318.20
  5. Step 5: Solve for x
    x = 245,391,318.20/19,904.20
  6. Step 6: Final answer
    x = 12,328.62

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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.