Home / 29,215.82-40,317.80-15,787.08

Finding the Fourth Proportional to 29,215.82, 40,317.80 and 15,787.08

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Solution

The fourth proportional to 29,215.82, 40,317.80 and 15,787.08 is: 21,786.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,215.82 : 40,317.80 = 15,787.08 : x
  2. Step 2: Convert to fraction form
    29,215.82/40,317.80 = 15,787.08/x
  3. Step 3: Cross multiply
    29,215.82x = 40,317.80 × 15,787.08
  4. Step 4: Simplify right side
    29,215.82x = 636,500,334.02
  5. Step 5: Solve for x
    x = 636,500,334.02/29,215.82
  6. Step 6: Final answer
    x = 21,786.15

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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.