Home / 21,241.32-29,317.86-13,776.36

Finding the Fourth Proportional to 21,241.32, 29,317.86 and 13,776.36

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Solution

The fourth proportional to 21,241.32, 29,317.86 and 13,776.36 is: 19,014.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.32 : 29,317.86 = 13,776.36 : x
  2. Step 2: Convert to fraction form
    21,241.32/29,317.86 = 13,776.36/x
  3. Step 3: Cross multiply
    21,241.32x = 29,317.86 × 13,776.36
  4. Step 4: Simplify right side
    21,241.32x = 403,893,393.79
  5. Step 5: Solve for x
    x = 403,893,393.79/21,241.32
  6. Step 6: Final answer
    x = 19,014.51

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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.