Home / 15,490.02-21,375.96-8,416.28

Finding the Fourth Proportional to 15,490.02, 21,375.96 and 8,416.28

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Solution

The fourth proportional to 15,490.02, 21,375.96 and 8,416.28 is: 11,614.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.02 : 21,375.96 = 8,416.28 : x
  2. Step 2: Convert to fraction form
    15,490.02/21,375.96 = 8,416.28/x
  3. Step 3: Cross multiply
    15,490.02x = 21,375.96 × 8,416.28
  4. Step 4: Simplify right side
    15,490.02x = 179,906,064.63
  5. Step 5: Solve for x
    x = 179,906,064.63/15,490.02
  6. Step 6: Final answer
    x = 11,614.32

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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.