Home / 14,002.08-20,985.30-7,431.36

Finding the Fourth Proportional to 14,002.08, 20,985.30 and 7,431.36

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Solution

The fourth proportional to 14,002.08, 20,985.30 and 7,431.36 is: 11,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,002.08 : 20,985.30 = 7,431.36 : x
  2. Step 2: Convert to fraction form
    14,002.08/20,985.30 = 7,431.36/x
  3. Step 3: Cross multiply
    14,002.08x = 20,985.30 × 7,431.36
  4. Step 4: Simplify right side
    14,002.08x = 155,949,319.01
  5. Step 5: Solve for x
    x = 155,949,319.01/14,002.08
  6. Step 6: Final answer
    x = 11,137.58

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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.