Home / 21,016.29-29,001.69-11,455.92

Finding the Fourth Proportional to 21,016.29, 29,001.69 and 11,455.92

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Solution

The fourth proportional to 21,016.29, 29,001.69 and 11,455.92 is: 15,808.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016.29 : 29,001.69 = 11,455.92 : x
  2. Step 2: Convert to fraction form
    21,016.29/29,001.69 = 11,455.92/x
  3. Step 3: Cross multiply
    21,016.29x = 29,001.69 × 11,455.92
  4. Step 4: Simplify right side
    21,016.29x = 332,241,040.50
  5. Step 5: Solve for x
    x = 332,241,040.50/21,016.29
  6. Step 6: Final answer
    x = 15,808.74

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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.