Home / 13,607.91-18,777.63-7,638.48

Finding the Fourth Proportional to 13,607.91, 18,777.63 and 7,638.48

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Solution

The fourth proportional to 13,607.91, 18,777.63 and 7,638.48 is: 10,540.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.91 : 18,777.63 = 7,638.48 : x
  2. Step 2: Convert to fraction form
    13,607.91/18,777.63 = 7,638.48/x
  3. Step 3: Cross multiply
    13,607.91x = 18,777.63 × 7,638.48
  4. Step 4: Simplify right side
    13,607.91x = 143,432,551.20
  5. Step 5: Solve for x
    x = 143,432,551.20/13,607.91
  6. Step 6: Final answer
    x = 10,540.38

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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.