Home / 42,469.36-63,707.04-12,889.60

Finding the Fourth Proportional to 42,469.36, 63,707.04 and 12,889.60

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Solution

The fourth proportional to 42,469.36, 63,707.04 and 12,889.60 is: 19,335.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,469.36 : 63,707.04 = 12,889.60 : x
  2. Step 2: Convert to fraction form
    42,469.36/63,707.04 = 12,889.60/x
  3. Step 3: Cross multiply
    42,469.36x = 63,707.04 × 12,889.60
  4. Step 4: Simplify right side
    42,469.36x = 821,158,262.78
  5. Step 5: Solve for x
    x = 821,158,262.78/42,469.36
  6. Step 6: Final answer
    x = 19,335.31

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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.