Home / 21,749.27-29,971.95-15,450.71

Finding the Fourth Proportional to 21,749.27, 29,971.95 and 15,450.71

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Solution

The fourth proportional to 21,749.27, 29,971.95 and 15,450.71 is: 21,292.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,749.27 : 29,971.95 = 15,450.71 : x
  2. Step 2: Convert to fraction form
    21,749.27/29,971.95 = 15,450.71/x
  3. Step 3: Cross multiply
    21,749.27x = 29,971.95 × 15,450.71
  4. Step 4: Simplify right side
    21,749.27x = 463,087,757.72
  5. Step 5: Solve for x
    x = 463,087,757.72/21,749.27
  6. Step 6: Final answer
    x = 21,292.11

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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.