Home / 15,359.95-21,196.55-8,900.47

Finding the Fourth Proportional to 15,359.95, 21,196.55 and 8,900.47

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Solution

The fourth proportional to 15,359.95, 21,196.55 and 8,900.47 is: 12,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.95 : 21,196.55 = 8,900.47 : x
  2. Step 2: Convert to fraction form
    15,359.95/21,196.55 = 8,900.47/x
  3. Step 3: Cross multiply
    15,359.95x = 21,196.55 × 8,900.47
  4. Step 4: Simplify right side
    15,359.95x = 188,659,257.38
  5. Step 5: Solve for x
    x = 188,659,257.38/15,359.95
  6. Step 6: Final answer
    x = 12,282.54

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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.