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Finding the Fourth Proportional to 40,513.44, 60,769.65 and 13,859.16

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Solution

The fourth proportional to 40,513.44, 60,769.65 and 13,859.16 is: 20,788.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,513.44 : 60,769.65 = 13,859.16 : x
  2. Step 2: Convert to fraction form
    40,513.44/60,769.65 = 13,859.16/x
  3. Step 3: Cross multiply
    40,513.44x = 60,769.65 × 13,859.16
  4. Step 4: Simplify right side
    40,513.44x = 842,216,302.49
  5. Step 5: Solve for x
    x = 842,216,302.49/40,513.44
  6. Step 6: Final answer
    x = 20,788.57

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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.