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Finding the Fourth Proportional to 13,903.79, 20,857.71 and 4,041.78

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Solution

The fourth proportional to 13,903.79, 20,857.71 and 4,041.78 is: 6,063.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.79 : 20,857.71 = 4,041.78 : x
  2. Step 2: Convert to fraction form
    13,903.79/20,857.71 = 4,041.78/x
  3. Step 3: Cross multiply
    13,903.79x = 20,857.71 × 4,041.78
  4. Step 4: Simplify right side
    13,903.79x = 84,302,368.50
  5. Step 5: Solve for x
    x = 84,302,368.50/13,903.79
  6. Step 6: Final answer
    x = 6,063.27

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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.