Home / 13,347.79-18,418.54-7,378.49

Finding the Fourth Proportional to 13,347.79, 18,418.54 and 7,378.49

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Solution

The fourth proportional to 13,347.79, 18,418.54 and 7,378.49 is: 10,181.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.79 : 18,418.54 = 7,378.49 : x
  2. Step 2: Convert to fraction form
    13,347.79/18,418.54 = 7,378.49/x
  3. Step 3: Cross multiply
    13,347.79x = 18,418.54 × 7,378.49
  4. Step 4: Simplify right side
    13,347.79x = 135,901,013.20
  5. Step 5: Solve for x
    x = 135,901,013.20/13,347.79
  6. Step 6: Final answer
    x = 10,181.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.