Home / 27,172.89-37,455.25-21,420.97

Finding the Fourth Proportional to 27,172.89, 37,455.25 and 21,420.97

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Solution

The fourth proportional to 27,172.89, 37,455.25 and 21,420.97 is: 29,526.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,172.89 : 37,455.25 = 21,420.97 : x
  2. Step 2: Convert to fraction form
    27,172.89/37,455.25 = 21,420.97/x
  3. Step 3: Cross multiply
    27,172.89x = 37,455.25 × 21,420.97
  4. Step 4: Simplify right side
    27,172.89x = 802,327,492.21
  5. Step 5: Solve for x
    x = 802,327,492.21/27,172.89
  6. Step 6: Final answer
    x = 29,526.76

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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.