Home / 12,347.72-18,518.70-3,580.28

Finding the Fourth Proportional to 12,347.72, 18,518.70 and 3,580.28

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Solution

The fourth proportional to 12,347.72, 18,518.70 and 3,580.28 is: 5,369.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.72 : 18,518.70 = 3,580.28 : x
  2. Step 2: Convert to fraction form
    12,347.72/18,518.70 = 3,580.28/x
  3. Step 3: Cross multiply
    12,347.72x = 18,518.70 × 3,580.28
  4. Step 4: Simplify right side
    12,347.72x = 66,302,131.24
  5. Step 5: Solve for x
    x = 66,302,131.24/12,347.72
  6. Step 6: Final answer
    x = 5,369.58

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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.