Home / 21,243.18-29,319.21-12,296.13

Finding the Fourth Proportional to 21,243.18, 29,319.21 and 12,296.13

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Solution

The fourth proportional to 21,243.18, 29,319.21 and 12,296.13 is: 16,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.18 : 29,319.21 = 12,296.13 : x
  2. Step 2: Convert to fraction form
    21,243.18/29,319.21 = 12,296.13/x
  3. Step 3: Cross multiply
    21,243.18x = 29,319.21 × 12,296.13
  4. Step 4: Simplify right side
    21,243.18x = 360,512,817.66
  5. Step 5: Solve for x
    x = 360,512,817.66/21,243.18
  6. Step 6: Final answer
    x = 16,970.76

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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.