Home / 15,490.53-21,376.35-8,416.80

Finding the Fourth Proportional to 15,490.53, 21,376.35 and 8,416.80

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Solution

The fourth proportional to 15,490.53, 21,376.35 and 8,416.80 is: 11,614.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.53 : 21,376.35 = 8,416.80 : x
  2. Step 2: Convert to fraction form
    15,490.53/21,376.35 = 8,416.80/x
  3. Step 3: Cross multiply
    15,490.53x = 21,376.35 × 8,416.80
  4. Step 4: Simplify right side
    15,490.53x = 179,920,462.68
  5. Step 5: Solve for x
    x = 179,920,462.68/15,490.53
  6. Step 6: Final answer
    x = 11,614.87

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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.