Home / 10,916.13-16,380.09-4,342.40

Finding the Fourth Proportional to 10,916.13, 16,380.09 and 4,342.40

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Solution

The fourth proportional to 10,916.13, 16,380.09 and 4,342.40 is: 6,515.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916.13 : 16,380.09 = 4,342.40 : x
  2. Step 2: Convert to fraction form
    10,916.13/16,380.09 = 4,342.40/x
  3. Step 3: Cross multiply
    10,916.13x = 16,380.09 × 4,342.40
  4. Step 4: Simplify right side
    10,916.13x = 71,128,820.92
  5. Step 5: Solve for x
    x = 71,128,820.92/10,916.13
  6. Step 6: Final answer
    x = 6,515.94

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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.