Home / 15,490.26-21,376.62-8,416.68

Finding the Fourth Proportional to 15,490.26, 21,376.62 and 8,416.68

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Solution

The fourth proportional to 15,490.26, 21,376.62 and 8,416.68 is: 11,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.26 : 21,376.62 = 8,416.68 : x
  2. Step 2: Convert to fraction form
    15,490.26/21,376.62 = 8,416.68/x
  3. Step 3: Cross multiply
    15,490.26x = 21,376.62 × 8,416.68
  4. Step 4: Simplify right side
    15,490.26x = 179,920,170.02
  5. Step 5: Solve for x
    x = 179,920,170.02/15,490.26
  6. Step 6: Final answer
    x = 11,615.05

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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.