Home / 14,121.64-19,490.70-8,154.28

Finding the Fourth Proportional to 14,121.64, 19,490.70 and 8,154.28

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Solution

The fourth proportional to 14,121.64, 19,490.70 and 8,154.28 is: 11,254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.64 : 19,490.70 = 8,154.28 : x
  2. Step 2: Convert to fraction form
    14,121.64/19,490.70 = 8,154.28/x
  3. Step 3: Cross multiply
    14,121.64x = 19,490.70 × 8,154.28
  4. Step 4: Simplify right side
    14,121.64x = 158,932,625.20
  5. Step 5: Solve for x
    x = 158,932,625.20/14,121.64
  6. Step 6: Final answer
    x = 11,254.54

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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.