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Finding the Fourth Proportional to 13,073.40, 18,045.42 and 8,357.70

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Solution

The fourth proportional to 13,073.40, 18,045.42 and 8,357.70 is: 11,536.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,073.40 : 18,045.42 = 8,357.70 : x
  2. Step 2: Convert to fraction form
    13,073.40/18,045.42 = 8,357.70/x
  3. Step 3: Cross multiply
    13,073.40x = 18,045.42 × 8,357.70
  4. Step 4: Simplify right side
    13,073.40x = 150,818,206.73
  5. Step 5: Solve for x
    x = 150,818,206.73/13,073.40
  6. Step 6: Final answer
    x = 11,536.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.