Home / 15,215.65-20,996.59-8,500.95

Finding the Fourth Proportional to 15,215.65, 20,996.59 and 8,500.95

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Solution

The fourth proportional to 15,215.65, 20,996.59 and 8,500.95 is: 11,730.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.65 : 20,996.59 = 8,500.95 : x
  2. Step 2: Convert to fraction form
    15,215.65/20,996.59 = 8,500.95/x
  3. Step 3: Cross multiply
    15,215.65x = 20,996.59 × 8,500.95
  4. Step 4: Simplify right side
    15,215.65x = 178,490,961.76
  5. Step 5: Solve for x
    x = 178,490,961.76/15,215.65
  6. Step 6: Final answer
    x = 11,730.75

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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.