Home / 21,243.75-29,317.05-11,812.92

Finding the Fourth Proportional to 21,243.75, 29,317.05 and 11,812.92

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Solution

The fourth proportional to 21,243.75, 29,317.05 and 11,812.92 is: 16,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.75 : 29,317.05 = 11,812.92 : x
  2. Step 2: Convert to fraction form
    21,243.75/29,317.05 = 11,812.92/x
  3. Step 3: Cross multiply
    21,243.75x = 29,317.05 × 11,812.92
  4. Step 4: Simplify right side
    21,243.75x = 346,319,966.29
  5. Step 5: Solve for x
    x = 346,319,966.29/21,243.75
  6. Step 6: Final answer
    x = 16,302.20

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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.