Home / 21,126.12-31,669.68-10,038.04

Finding the Fourth Proportional to 21,126.12, 31,669.68 and 10,038.04

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Solution

The fourth proportional to 21,126.12, 31,669.68 and 10,038.04 is: 15,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.12 : 31,669.68 = 10,038.04 : x
  2. Step 2: Convert to fraction form
    21,126.12/31,669.68 = 10,038.04/x
  3. Step 3: Cross multiply
    21,126.12x = 31,669.68 × 10,038.04
  4. Step 4: Simplify right side
    21,126.12x = 317,901,514.63
  5. Step 5: Solve for x
    x = 317,901,514.63/21,126.12
  6. Step 6: Final answer
    x = 15,047.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.