Home / 21,243.98-29,316.12-11,812.88

Finding the Fourth Proportional to 21,243.98, 29,316.12 and 11,812.88

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Solution

The fourth proportional to 21,243.98, 29,316.12 and 11,812.88 is: 16,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.98 : 29,316.12 = 11,812.88 : x
  2. Step 2: Convert to fraction form
    21,243.98/29,316.12 = 11,812.88/x
  3. Step 3: Cross multiply
    21,243.98x = 29,316.12 × 11,812.88
  4. Step 4: Simplify right side
    21,243.98x = 346,307,807.63
  5. Step 5: Solve for x
    x = 346,307,807.63/21,243.98
  6. Step 6: Final answer
    x = 16,301.46

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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.