Home / 21,347.82-29,459.95-11,916.38

Finding the Fourth Proportional to 21,347.82, 29,459.95 and 11,916.38

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Solution

The fourth proportional to 21,347.82, 29,459.95 and 11,916.38 is: 16,444.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.82 : 29,459.95 = 11,916.38 : x
  2. Step 2: Convert to fraction form
    21,347.82/29,459.95 = 11,916.38/x
  3. Step 3: Cross multiply
    21,347.82x = 29,459.95 × 11,916.38
  4. Step 4: Simplify right side
    21,347.82x = 351,055,958.98
  5. Step 5: Solve for x
    x = 351,055,958.98/21,347.82
  6. Step 6: Final answer
    x = 16,444.58

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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.