Home / 11,987.01-17,980.50-3,221.93

Finding the Fourth Proportional to 11,987.01, 17,980.50 and 3,221.93

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Solution

The fourth proportional to 11,987.01, 17,980.50 and 3,221.93 is: 4,832.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.01 : 17,980.50 = 3,221.93 : x
  2. Step 2: Convert to fraction form
    11,987.01/17,980.50 = 3,221.93/x
  3. Step 3: Cross multiply
    11,987.01x = 17,980.50 × 3,221.93
  4. Step 4: Simplify right side
    11,987.01x = 57,931,822.46
  5. Step 5: Solve for x
    x = 57,931,822.46/11,987.01
  6. Step 6: Final answer
    x = 4,832.88

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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.