Home / 10,913.64-16,368.80-3,986.52

Finding the Fourth Proportional to 10,913.64, 16,368.80 and 3,986.52

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Solution

The fourth proportional to 10,913.64, 16,368.80 and 3,986.52 is: 5,979.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.64 : 16,368.80 = 3,986.52 : x
  2. Step 2: Convert to fraction form
    10,913.64/16,368.80 = 3,986.52/x
  3. Step 3: Cross multiply
    10,913.64x = 16,368.80 × 3,986.52
  4. Step 4: Simplify right side
    10,913.64x = 65,254,548.58
  5. Step 5: Solve for x
    x = 65,254,548.58/10,913.64
  6. Step 6: Final answer
    x = 5,979.17

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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.