Home / 20,141.61-30,215.66-8,458.17

Finding the Fourth Proportional to 20,141.61, 30,215.66 and 8,458.17

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Solution

The fourth proportional to 20,141.61, 30,215.66 and 8,458.17 is: 12,688.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.61 : 30,215.66 = 8,458.17 : x
  2. Step 2: Convert to fraction form
    20,141.61/30,215.66 = 8,458.17/x
  3. Step 3: Cross multiply
    20,141.61x = 30,215.66 × 8,458.17
  4. Step 4: Simplify right side
    20,141.61x = 255,569,146.65
  5. Step 5: Solve for x
    x = 255,569,146.65/20,141.61
  6. Step 6: Final answer
    x = 12,688.62

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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.