Home / 13,916.72-20,881.84-6,897.36

Finding the Fourth Proportional to 13,916.72, 20,881.84 and 6,897.36

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Solution

The fourth proportional to 13,916.72, 20,881.84 and 6,897.36 is: 10,349.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.72 : 20,881.84 = 6,897.36 : x
  2. Step 2: Convert to fraction form
    13,916.72/20,881.84 = 6,897.36/x
  3. Step 3: Cross multiply
    13,916.72x = 20,881.84 × 6,897.36
  4. Step 4: Simplify right side
    13,916.72x = 144,029,567.94
  5. Step 5: Solve for x
    x = 144,029,567.94/13,916.72
  6. Step 6: Final answer
    x = 10,349.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.