Home / 10,869.64-16,302.30-5,320.60

Finding the Fourth Proportional to 10,869.64, 16,302.30 and 5,320.60

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Solution

The fourth proportional to 10,869.64, 16,302.30 and 5,320.60 is: 7,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.64 : 16,302.30 = 5,320.60 : x
  2. Step 2: Convert to fraction form
    10,869.64/16,302.30 = 5,320.60/x
  3. Step 3: Cross multiply
    10,869.64x = 16,302.30 × 5,320.60
  4. Step 4: Simplify right side
    10,869.64x = 86,738,017.38
  5. Step 5: Solve for x
    x = 86,738,017.38/10,869.64
  6. Step 6: Final answer
    x = 7,979.84

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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.