Home / 21,477.39-29,637.30-11,916.87

Finding the Fourth Proportional to 21,477.39, 29,637.30 and 11,916.87

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Solution

The fourth proportional to 21,477.39, 29,637.30 and 11,916.87 is: 16,444.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,477.39 : 29,637.30 = 11,916.87 : x
  2. Step 2: Convert to fraction form
    21,477.39/29,637.30 = 11,916.87/x
  3. Step 3: Cross multiply
    21,477.39x = 29,637.30 × 11,916.87
  4. Step 4: Simplify right side
    21,477.39x = 353,183,851.25
  5. Step 5: Solve for x
    x = 353,183,851.25/21,477.39
  6. Step 6: Final answer
    x = 16,444.45

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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.