Home / 12,445.89-18,668.23-4,654.09

Finding the Fourth Proportional to 12,445.89, 18,668.23 and 4,654.09

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Solution

The fourth proportional to 12,445.89, 18,668.23 and 4,654.09 is: 6,980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.89 : 18,668.23 = 4,654.09 : x
  2. Step 2: Convert to fraction form
    12,445.89/18,668.23 = 4,654.09/x
  3. Step 3: Cross multiply
    12,445.89x = 18,668.23 × 4,654.09
  4. Step 4: Simplify right side
    12,445.89x = 86,883,669.30
  5. Step 5: Solve for x
    x = 86,883,669.30/12,445.89
  6. Step 6: Final answer
    x = 6,980.91

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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.