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Finding the Fourth Proportional to 39,463, 59,223.72 and 18,686.56

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Solution

The fourth proportional to 39,463, 59,223.72 and 18,686.56 is: 28,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,463 : 59,223.72 = 18,686.56 : x
  2. Step 2: Convert to fraction form
    39,463/59,223.72 = 18,686.56/x
  3. Step 3: Cross multiply
    39,463x = 59,223.72 × 18,686.56
  4. Step 4: Simplify right side
    39,463x = 1,106,687,597.20
  5. Step 5: Solve for x
    x = 1,106,687,597.20/39,463
  6. Step 6: Final answer
    x = 28,043.68

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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.