Home / 21,314.22-31,971.36-7,459.98

Finding the Fourth Proportional to 21,314.22, 31,971.36 and 7,459.98

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Solution

The fourth proportional to 21,314.22, 31,971.36 and 7,459.98 is: 11,189.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.22 : 31,971.36 = 7,459.98 : x
  2. Step 2: Convert to fraction form
    21,314.22/31,971.36 = 7,459.98/x
  3. Step 3: Cross multiply
    21,314.22x = 31,971.36 × 7,459.98
  4. Step 4: Simplify right side
    21,314.22x = 238,505,706.17
  5. Step 5: Solve for x
    x = 238,505,706.17/21,314.22
  6. Step 6: Final answer
    x = 11,189.98

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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.