Home / 15,490.11-21,376.08-8,416.56

Finding the Fourth Proportional to 15,490.11, 21,376.08 and 8,416.56

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Solution

The fourth proportional to 15,490.11, 21,376.08 and 8,416.56 is: 11,614.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.11 : 21,376.08 = 8,416.56 : x
  2. Step 2: Convert to fraction form
    15,490.11/21,376.08 = 8,416.56/x
  3. Step 3: Cross multiply
    15,490.11x = 21,376.08 × 8,416.56
  4. Step 4: Simplify right side
    15,490.11x = 179,913,059.88
  5. Step 5: Solve for x
    x = 179,913,059.88/15,490.11
  6. Step 6: Final answer
    x = 11,614.71

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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.