Home / 21,039.72-29,032.80-11,607.68

Finding the Fourth Proportional to 21,039.72, 29,032.80 and 11,607.68

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Solution

The fourth proportional to 21,039.72, 29,032.80 and 11,607.68 is: 16,017.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.72 : 29,032.80 = 11,607.68 : x
  2. Step 2: Convert to fraction form
    21,039.72/29,032.80 = 11,607.68/x
  3. Step 3: Cross multiply
    21,039.72x = 29,032.80 × 11,607.68
  4. Step 4: Simplify right side
    21,039.72x = 337,003,306.74
  5. Step 5: Solve for x
    x = 337,003,306.74/21,039.72
  6. Step 6: Final answer
    x = 16,017.48

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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.