Home / 42,012.90-63,007.20-15,355.80

Finding the Fourth Proportional to 42,012.90, 63,007.20 and 15,355.80

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Solution

The fourth proportional to 42,012.90, 63,007.20 and 15,355.80 is: 23,029.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,012.90 : 63,007.20 = 15,355.80 : x
  2. Step 2: Convert to fraction form
    42,012.90/63,007.20 = 15,355.80/x
  3. Step 3: Cross multiply
    42,012.90x = 63,007.20 × 15,355.80
  4. Step 4: Simplify right side
    42,012.90x = 967,525,961.76
  5. Step 5: Solve for x
    x = 967,525,961.76/42,012.90
  6. Step 6: Final answer
    x = 23,029.26

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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.