Home / 21,676.10-29,916.42-15,705.59

Finding the Fourth Proportional to 21,676.10, 29,916.42 and 15,705.59

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Solution

The fourth proportional to 21,676.10, 29,916.42 and 15,705.59 is: 21,676.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.10 : 29,916.42 = 15,705.59 : x
  2. Step 2: Convert to fraction form
    21,676.10/29,916.42 = 15,705.59/x
  3. Step 3: Cross multiply
    21,676.10x = 29,916.42 × 15,705.59
  4. Step 4: Simplify right side
    21,676.10x = 469,855,026.79
  5. Step 5: Solve for x
    x = 469,855,026.79/21,676.10
  6. Step 6: Final answer
    x = 21,676.18

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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.