Home / 32,939.78-49,415.70-13,220.30

Finding the Fourth Proportional to 32,939.78, 49,415.70 and 13,220.30

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Solution

The fourth proportional to 32,939.78, 49,415.70 and 13,220.30 is: 19,832.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,939.78 : 49,415.70 = 13,220.30 : x
  2. Step 2: Convert to fraction form
    32,939.78/49,415.70 = 13,220.30/x
  3. Step 3: Cross multiply
    32,939.78x = 49,415.70 × 13,220.30
  4. Step 4: Simplify right side
    32,939.78x = 653,290,378.71
  5. Step 5: Solve for x
    x = 653,290,378.71/32,939.78
  6. Step 6: Final answer
    x = 19,832.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.