Home / 43,130.50-64,695.78-11,965.78

Finding the Fourth Proportional to 43,130.50, 64,695.78 and 11,965.78

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Solution

The fourth proportional to 43,130.50, 64,695.78 and 11,965.78 is: 17,948.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,130.50 : 64,695.78 = 11,965.78 : x
  2. Step 2: Convert to fraction form
    43,130.50/64,695.78 = 11,965.78/x
  3. Step 3: Cross multiply
    43,130.50x = 64,695.78 × 11,965.78
  4. Step 4: Simplify right side
    43,130.50x = 774,135,470.41
  5. Step 5: Solve for x
    x = 774,135,470.41/43,130.50
  6. Step 6: Final answer
    x = 17,948.68

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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.