Home / 42,020.70-63,032.16-13,942.75

Finding the Fourth Proportional to 42,020.70, 63,032.16 and 13,942.75

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Solution

The fourth proportional to 42,020.70, 63,032.16 and 13,942.75 is: 20,914.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,020.70 : 63,032.16 = 13,942.75 : x
  2. Step 2: Convert to fraction form
    42,020.70/63,032.16 = 13,942.75/x
  3. Step 3: Cross multiply
    42,020.70x = 63,032.16 × 13,942.75
  4. Step 4: Simplify right side
    42,020.70x = 878,841,648.84
  5. Step 5: Solve for x
    x = 878,841,648.84/42,020.70
  6. Step 6: Final answer
    x = 20,914.49

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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.