Home / 29,213.89-40,315.19-15,785.14

Finding the Fourth Proportional to 29,213.89, 40,315.19 and 15,785.14

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Solution

The fourth proportional to 29,213.89, 40,315.19 and 15,785.14 is: 21,783.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,213.89 : 40,315.19 = 15,785.14 : x
  2. Step 2: Convert to fraction form
    29,213.89/40,315.19 = 15,785.14/x
  3. Step 3: Cross multiply
    29,213.89x = 40,315.19 × 15,785.14
  4. Step 4: Simplify right side
    29,213.89x = 636,380,918.28
  5. Step 5: Solve for x
    x = 636,380,918.28/29,213.89
  6. Step 6: Final answer
    x = 21,783.50

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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.