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Finding the Fourth Proportional to 39,618, 59,386.05 and 13,313.88

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Solution

The fourth proportional to 39,618, 59,386.05 and 13,313.88 is: 19,957.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,618 : 59,386.05 = 13,313.88 : x
  2. Step 2: Convert to fraction form
    39,618/59,386.05 = 13,313.88/x
  3. Step 3: Cross multiply
    39,618x = 59,386.05 × 13,313.88
  4. Step 4: Simplify right side
    39,618x = 790,658,743.37
  5. Step 5: Solve for x
    x = 790,658,743.37/39,618
  6. Step 6: Final answer
    x = 19,957.06

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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.