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Finding the Fourth Proportional to 10,893.90, 16,438.13 and 10,529.40

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Solution

The fourth proportional to 10,893.90, 16,438.13 and 10,529.40 is: 15,888.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,893.90 : 16,438.13 = 10,529.40 : x
  2. Step 2: Convert to fraction form
    10,893.90/16,438.13 = 10,529.40/x
  3. Step 3: Cross multiply
    10,893.90x = 16,438.13 × 10,529.40
  4. Step 4: Simplify right side
    10,893.90x = 173,083,593.38
  5. Step 5: Solve for x
    x = 173,083,593.38/10,893.90
  6. Step 6: Final answer
    x = 15,888.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.