Home / 13,676.02-18,871.54-7,708.75

Finding the Fourth Proportional to 13,676.02, 18,871.54 and 7,708.75

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Solution

The fourth proportional to 13,676.02, 18,871.54 and 7,708.75 is: 10,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.02 : 18,871.54 = 7,708.75 : x
  2. Step 2: Convert to fraction form
    13,676.02/18,871.54 = 7,708.75/x
  3. Step 3: Cross multiply
    13,676.02x = 18,871.54 × 7,708.75
  4. Step 4: Simplify right side
    13,676.02x = 145,475,983.98
  5. Step 5: Solve for x
    x = 145,475,983.98/13,676.02
  6. Step 6: Final answer
    x = 10,637.30

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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.