Home / 42,021.90-63,020.70-15,364.80

Finding the Fourth Proportional to 42,021.90, 63,020.70 and 15,364.80

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Solution

The fourth proportional to 42,021.90, 63,020.70 and 15,364.80 is: 23,042.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,021.90 : 63,020.70 = 15,364.80 : x
  2. Step 2: Convert to fraction form
    42,021.90/63,020.70 = 15,364.80/x
  3. Step 3: Cross multiply
    42,021.90x = 63,020.70 × 15,364.80
  4. Step 4: Simplify right side
    42,021.90x = 968,300,451.36
  5. Step 5: Solve for x
    x = 968,300,451.36/42,021.90
  6. Step 6: Final answer
    x = 23,042.76

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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.