Home / 21,017.59-29,003.73-11,457.72

Finding the Fourth Proportional to 21,017.59, 29,003.73 and 11,457.72

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Solution

The fourth proportional to 21,017.59, 29,003.73 and 11,457.72 is: 15,811.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.59 : 29,003.73 = 11,457.72 : x
  2. Step 2: Convert to fraction form
    21,017.59/29,003.73 = 11,457.72/x
  3. Step 3: Cross multiply
    21,017.59x = 29,003.73 × 11,457.72
  4. Step 4: Simplify right side
    21,017.59x = 332,316,617.30
  5. Step 5: Solve for x
    x = 332,316,617.30/21,017.59
  6. Step 6: Final answer
    x = 15,811.36

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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.