Home / 15,185.95-20,956.61-8,471.55

Finding the Fourth Proportional to 15,185.95, 20,956.61 and 8,471.55

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Solution

The fourth proportional to 15,185.95, 20,956.61 and 8,471.55 is: 11,690.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.95 : 20,956.61 = 8,471.55 : x
  2. Step 2: Convert to fraction form
    15,185.95/20,956.61 = 8,471.55/x
  3. Step 3: Cross multiply
    15,185.95x = 20,956.61 × 8,471.55
  4. Step 4: Simplify right side
    15,185.95x = 177,534,927.09
  5. Step 5: Solve for x
    x = 177,534,927.09/15,185.95
  6. Step 6: Final answer
    x = 11,690.74

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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.