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Finding the Fourth Proportional to 39,309.78, 58,964.04 and 14,349.72

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Solution

The fourth proportional to 39,309.78, 58,964.04 and 14,349.72 is: 21,524.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.78 : 58,964.04 = 14,349.72 : x
  2. Step 2: Convert to fraction form
    39,309.78/58,964.04 = 14,349.72/x
  3. Step 3: Cross multiply
    39,309.78x = 58,964.04 × 14,349.72
  4. Step 4: Simplify right side
    39,309.78x = 846,117,464.07
  5. Step 5: Solve for x
    x = 846,117,464.07/39,309.78
  6. Step 6: Final answer
    x = 21,524.35

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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.