Home / 12,430.24-18,646.20-4,639

Finding the Fourth Proportional to 12,430.24, 18,646.20 and 4,639

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Solution

The fourth proportional to 12,430.24, 18,646.20 and 4,639 is: 6,958.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.24 : 18,646.20 = 4,639 : x
  2. Step 2: Convert to fraction form
    12,430.24/18,646.20 = 4,639/x
  3. Step 3: Cross multiply
    12,430.24x = 18,646.20 × 4,639
  4. Step 4: Simplify right side
    12,430.24x = 86,499,721.80
  5. Step 5: Solve for x
    x = 86,499,721.80/12,430.24
  6. Step 6: Final answer
    x = 6,958.81

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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.