Home / 21,020.50-29,007.90-11,460.46

Finding the Fourth Proportional to 21,020.50, 29,007.90 and 11,460.46

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Solution

The fourth proportional to 21,020.50, 29,007.90 and 11,460.46 is: 15,815.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.50 : 29,007.90 = 11,460.46 : x
  2. Step 2: Convert to fraction form
    21,020.50/29,007.90 = 11,460.46/x
  3. Step 3: Cross multiply
    21,020.50x = 29,007.90 × 11,460.46
  4. Step 4: Simplify right side
    21,020.50x = 332,443,877.63
  5. Step 5: Solve for x
    x = 332,443,877.63/21,020.50
  6. Step 6: Final answer
    x = 15,815.22

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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.