Home / 29,212.89-40,313.81-15,784.14

Finding the Fourth Proportional to 29,212.89, 40,313.81 and 15,784.14

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Solution

The fourth proportional to 29,212.89, 40,313.81 and 15,784.14 is: 21,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,212.89 : 40,313.81 = 15,784.14 : x
  2. Step 2: Convert to fraction form
    29,212.89/40,313.81 = 15,784.14/x
  3. Step 3: Cross multiply
    29,212.89x = 40,313.81 × 15,784.14
  4. Step 4: Simplify right side
    29,212.89x = 636,318,820.97
  5. Step 5: Solve for x
    x = 636,318,820.97/29,212.89
  6. Step 6: Final answer
    x = 21,782.12

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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.