Home / 21,017.23-29,003.19-11,457.30

Finding the Fourth Proportional to 21,017.23, 29,003.19 and 11,457.30

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Solution

The fourth proportional to 21,017.23, 29,003.19 and 11,457.30 is: 15,810.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.23 : 29,003.19 = 11,457.30 : x
  2. Step 2: Convert to fraction form
    21,017.23/29,003.19 = 11,457.30/x
  3. Step 3: Cross multiply
    21,017.23x = 29,003.19 × 11,457.30
  4. Step 4: Simplify right side
    21,017.23x = 332,298,270.27
  5. Step 5: Solve for x
    x = 332,298,270.27/21,017.23
  6. Step 6: Final answer
    x = 15,810.76

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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.