Home / 12,430.45-18,646.53-3,665.71

Finding the Fourth Proportional to 12,430.45, 18,646.53 and 3,665.71

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Solution

The fourth proportional to 12,430.45, 18,646.53 and 3,665.71 is: 5,498.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.45 : 18,646.53 = 3,665.71 : x
  2. Step 2: Convert to fraction form
    12,430.45/18,646.53 = 3,665.71/x
  3. Step 3: Cross multiply
    12,430.45x = 18,646.53 × 3,665.71
  4. Step 4: Simplify right side
    12,430.45x = 68,352,771.49
  5. Step 5: Solve for x
    x = 68,352,771.49/12,430.45
  6. Step 6: Final answer
    x = 5,498.82

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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.