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Finding the Fourth Proportional to 39,458.70, 59,191.13 and 13,163.42

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Solution

The fourth proportional to 39,458.70, 59,191.13 and 13,163.42 is: 19,746.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,458.70 : 59,191.13 = 13,163.42 : x
  2. Step 2: Convert to fraction form
    39,458.70/59,191.13 = 13,163.42/x
  3. Step 3: Cross multiply
    39,458.70x = 59,191.13 × 13,163.42
  4. Step 4: Simplify right side
    39,458.70x = 779,157,885.35
  5. Step 5: Solve for x
    x = 779,157,885.35/39,458.70
  6. Step 6: Final answer
    x = 19,746.16

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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.