Home / 21,303.40-29,398.98-11,871.64

Finding the Fourth Proportional to 21,303.40, 29,398.98 and 11,871.64

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Solution

The fourth proportional to 21,303.40, 29,398.98 and 11,871.64 is: 16,383.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.40 : 29,398.98 = 11,871.64 : x
  2. Step 2: Convert to fraction form
    21,303.40/29,398.98 = 11,871.64/x
  3. Step 3: Cross multiply
    21,303.40x = 29,398.98 × 11,871.64
  4. Step 4: Simplify right side
    21,303.40x = 349,014,106.93
  5. Step 5: Solve for x
    x = 349,014,106.93/21,303.40
  6. Step 6: Final answer
    x = 16,383.02

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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.