Home / 21,017.74-29,003.74-11,457.43

Finding the Fourth Proportional to 21,017.74, 29,003.74 and 11,457.43

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Solution

The fourth proportional to 21,017.74, 29,003.74 and 11,457.43 is: 15,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.74 : 29,003.74 = 11,457.43 : x
  2. Step 2: Convert to fraction form
    21,017.74/29,003.74 = 11,457.43/x
  3. Step 3: Cross multiply
    21,017.74x = 29,003.74 × 11,457.43
  4. Step 4: Simplify right side
    21,017.74x = 332,308,320.79
  5. Step 5: Solve for x
    x = 332,308,320.79/21,017.74
  6. Step 6: Final answer
    x = 15,810.85

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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.