Home / 10,934.60-16,389.47-9,615.78

Finding the Fourth Proportional to 10,934.60, 16,389.47 and 9,615.78

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Solution

The fourth proportional to 10,934.60, 16,389.47 and 9,615.78 is: 14,412.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,934.60 : 16,389.47 = 9,615.78 : x
  2. Step 2: Convert to fraction form
    10,934.60/16,389.47 = 9,615.78/x
  3. Step 3: Cross multiply
    10,934.60x = 16,389.47 × 9,615.78
  4. Step 4: Simplify right side
    10,934.60x = 157,597,537.84
  5. Step 5: Solve for x
    x = 157,597,537.84/10,934.60
  6. Step 6: Final answer
    x = 14,412.74

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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.