Home / 29,212.40-40,313.12-15,783.64

Finding the Fourth Proportional to 29,212.40, 40,313.12 and 15,783.64

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Solution

The fourth proportional to 29,212.40, 40,313.12 and 15,783.64 is: 21,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,212.40 : 40,313.12 = 15,783.64 : x
  2. Step 2: Convert to fraction form
    29,212.40/40,313.12 = 15,783.64/x
  3. Step 3: Cross multiply
    29,212.40x = 40,313.12 × 15,783.64
  4. Step 4: Simplify right side
    29,212.40x = 636,287,773.36
  5. Step 5: Solve for x
    x = 636,287,773.36/29,212.40
  6. Step 6: Final answer
    x = 21,781.43

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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.