Home / 14,115.34-21,173.40-7,871.86

Finding the Fourth Proportional to 14,115.34, 21,173.40 and 7,871.86

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Solution

The fourth proportional to 14,115.34, 21,173.40 and 7,871.86 is: 11,808.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.34 : 21,173.40 = 7,871.86 : x
  2. Step 2: Convert to fraction form
    14,115.34/21,173.40 = 7,871.86/x
  3. Step 3: Cross multiply
    14,115.34x = 21,173.40 × 7,871.86
  4. Step 4: Simplify right side
    14,115.34x = 166,674,040.52
  5. Step 5: Solve for x
    x = 166,674,040.52/14,115.34
  6. Step 6: Final answer
    x = 11,808.01

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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.