Home / 21,264.36-31,861.98-12,507.24

Finding the Fourth Proportional to 21,264.36, 31,861.98 and 12,507.24

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Solution

The fourth proportional to 21,264.36, 31,861.98 and 12,507.24 is: 18,740.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,264.36 : 31,861.98 = 12,507.24 : x
  2. Step 2: Convert to fraction form
    21,264.36/31,861.98 = 12,507.24/x
  3. Step 3: Cross multiply
    21,264.36x = 31,861.98 × 12,507.24
  4. Step 4: Simplify right side
    21,264.36x = 398,505,430.74
  5. Step 5: Solve for x
    x = 398,505,430.74/21,264.36
  6. Step 6: Final answer
    x = 18,740.53

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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.