Home / 21,490.64-29,649.48-14,042.96

Finding the Fourth Proportional to 21,490.64, 29,649.48 and 14,042.96

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Solution

The fourth proportional to 21,490.64, 29,649.48 and 14,042.96 is: 19,374.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.64 : 29,649.48 = 14,042.96 : x
  2. Step 2: Convert to fraction form
    21,490.64/29,649.48 = 14,042.96/x
  3. Step 3: Cross multiply
    21,490.64x = 29,649.48 × 14,042.96
  4. Step 4: Simplify right side
    21,490.64x = 416,366,461.66
  5. Step 5: Solve for x
    x = 416,366,461.66/21,490.64
  6. Step 6: Final answer
    x = 19,374.32

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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.