Home / 21,347.72-29,460.31-11,916.28

Finding the Fourth Proportional to 21,347.72, 29,460.31 and 11,916.28

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Solution

The fourth proportional to 21,347.72, 29,460.31 and 11,916.28 is: 16,444.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.72 : 29,460.31 = 11,916.28 : x
  2. Step 2: Convert to fraction form
    21,347.72/29,460.31 = 11,916.28/x
  3. Step 3: Cross multiply
    21,347.72x = 29,460.31 × 11,916.28
  4. Step 4: Simplify right side
    21,347.72x = 351,057,309.88
  5. Step 5: Solve for x
    x = 351,057,309.88/21,347.72
  6. Step 6: Final answer
    x = 16,444.72

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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.